Answer:
Burning of paper and log of wood.
Digestion of food.
Boiling an egg.
Chemical battery usage.
Electroplating a metal.
Baking a cake.
Milk going sour.
Various metabolic reactions that take place in the cells.
Explanation:
Physical changes only change the appearance of a substance, not its chemical composition. Chemical changes cause a substance to change into an entirely substance with a new chemical formula. Chemical changes are also known as chemical reactions.
What do the elements within a "period" have in common? (pick one)
A. same number of electrons
B. similar chemical properties
C. equal number of electron orbits
D. equal atomic number
Answer:
All of the elements in a period have the same number of atomic orbitals. For example, every element in the top row (the first period) has one orbital for its electrons. All of the elements in the second row (the second period) have two orbitals for their electrons.
Explanation:
If two oceanic plates move towards each other at a convergent boundary, then_____ may occur.
earthquakes
faults
ocean formation
mountains
volcanoes
island chains
seafloor spreading
pick two events
Answer:
I think the answer is Volcanoes.
Explanation:
If the two plates that meet at a convergent plate boundary both are of oceanic crust, the older, denser plate will subduct beneath the less dense plate. The older plate subducts into a trench, resulting in earthquakes. Melting of mantle material creates volcanoes at the subduction zone.
When two oceanic plates converge, the denser plate will end up sinking below the less dense plate, leading to the formation of an oceanic subduction zone. Old, dense crust tends to be subducted back into the earth. An example of a subduction zone formed from a convergent boundary is the Chile-Peru trench.
Hope this helps and if you could mark this as brainliest. Thanks!
Energy and Temperature Activity Worksheet
Instructions: Follow the directions below to complete part one and part two of this activity. You will submit both parts once completed.
Note: You are not performing the experiment—only designing it.
Introduction
The purpose of this assignment is to design an experiment that another student could follow and use to test whether land or water heats faster.
You will complete the following:
Part One: Experimental Design. Plan out an experiment by answering the guiding questions below.
Part Two: Design a Lab Report. Write the outline of a lab report so that another student could complete the experiment by using the materials listed below:
sand
water
heat lamps
thermometers
cups
Part One: Experimental Design
In this section, you will think about what type of experiment to set up. Remember, you are NOT completing the experiment, only designing it. If you want to review the scientific method first, use this tutorial. Use these guiding questions to help you design the experiment. Answer each question below:
What hypothesis will the experiment test?
What are the variables?
What purpose would the sand serve?
What purpose would the water serve?
What purpose would the heat lamps serve?
What purpose would the thermometers use?
How can you use these materials to test whether land or water heats faster?
How would you compare whether land or water heats faster?
Within a 24-hour period, at what three points should the temperature be taken? Why?
What would an effective conclusion need to include?
Part Two: Design a Lab Report
Once you have designed the experiment, you must write out the instructions so another student could act as the experimenter and follow them. Fill in the following elements of this lab report as described in italics below.
Lab Report
Objective
Explain the purpose of your lab.
Procedure
List the experiment procedures. Some steps have been filled in for you. You may need to adjust the numbers to match the steps you decide on.
Identify the variables.
Write out your hypothesis in an if/then format.
Gather your materials.
Analyze the data.
Write your conclusion.
Data Analysis
Label a data table so that the experimenter can record observations for the sand and water temperatures at various points.
Conclusion
Explain what the experimenter should include in this section to show how the data proved the hypothesis.
Answer:
the ground would heat up slower than the sand because it has lots of moisture so sand would heat up faster than any thing other than lava
Explanation:
so like i need help pls!!!!!!!!!
Answer: pretty sure it is number 2
Explanation: sorry if i am wrong.
By which mechanism does older oceanic rock move at a ridge?
A) New molten material rises and moves the rock
B) The ridge subducts and moves the rock
C) Continents drift and move the rock.
D) Magnetic forces move the rock.
Answer:
A) New molten material rises and moves the rock
Explanation:
Which of the following is the best definition of weather?
a Events that happen over a long period of time
b A pattern of seasons changing over time.
c The atmospheric conditions at a particular time
d A measure of kinetic energy in the atmosphere
Answer:
C
Explanation:
Weather is what is happening at one point in time
Answer:
C.
Explanation:
The atmosphere changes everyday and that is what makes the weather cold or warm.
I need an example of Nuclear Chemistry.
Any suggestions...
Answer:
Nuclear fusion: reactions in which two or more elements "fuse" together to form one larger element, releasing energy in the process. A good example is the fusion of two "heavy" isotopes of hydrogen (deuterium: H2 and tritium: H3) into the element helium.
Explanation:
please mark me brainlist
can anyone do this?i dont understand it!
GIVING BRAINLIEST FOR RIGHT ANSWERS PLS HELP
A fuel scientist burnt a piece of coal and a piece of wood to compare the amount of heat given off by each. Which is the correct match of the type of change happening and the property being tested during the process?
answer choices
1.Physical change; Chemical property flammability
2.Physical change; Physical property of flammability
3.Chemical change; Physical property of heat of combustion
4.Chemical change; Chemical property of heat of combustion
Answer:
Answer: Chemical change; Chemical property of heat of combustion
Explanation:
A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these reactions.
Explanation:
Answer:
: Chemical change; Chemical property of heat of combustion
Explanation:
A physical change is defined as a change in which there is alteration in shape, size etc. No new substance gets formed in these reactions.
Example: Melting of ice
Physical property is defined as the property of a substance which becomes evident during physical changes. Example: Melting point
A chemical change is defined as a change in which a change in chemical composition takes place. A new substance is formed in these reactions.
Example: combustion
Chemical property is defined as the property of a substance which becomes evident during chemical changes. Example: Reactivity with other substances
Thus when a piece of coal and a piece of wood is burnt , there is formation of new substances and thus is a chemical change. Combustion is a chemical property as it is reactivity of a substance with oxygen.
eddibear3a and 18 more users found this answer helpful
THANKS
9
4.0
(9 votes)
Still have questions?
FIND MORE ANSWERS
ASK YOUR QUESTION
New questions in Chemistry
Pleasee help me, thank you A solution is made by dissolving 29 g of sodium lithium chloride in water to a final volume of 202 mL solution. What i…
If 49.0 g of O2 is mixed with 49.0 g of H2 and the mixture is ignited, what is the maximum mass of water that may be produced?
What is the current in a 160V circuit if the resistance is 10Ω?
wewuhfritgvufgfbIn which step did Jaclyn make an error? In step 1, she switched the x and y values in point 2. In step 2, she used the wrong formula…
The indicator phenolphthalein is added to the _____________. a. Analyte b. Water c. Solute d. Titrant
Which two bonds are most similar in polarity? Which two bonds are most similar in polarity? O-F and Cl-F B-F and Cl-F I-Br and Si-Cl Al-Cl and I-Br C-…
The sample of 15.0 g of KCl is dissolved into a solution with a total volume of 250.0 mL. What is the molarity of KCl in the solution?
Select the correct answer A rock is dropped from a height of 2.5 meters. What is its velocity when it reaches the ground? a. 3.5 meters/second b. 7 m/…
i really need help with the rest of this assignment. theres 10 pages of multiple choice questions, i can mark brainliest and pay money if you help me …
plz tell me the answer
i really need help with the rest of this assignment. theres 10 pages of multiple choice questions, i can mark brainliest and pay money if you help me …
Of the following, which information is obtained by looking at the group numbers of elements? (Group A number designations: 1A-8A) The number of elec…
Which definition best describes the term activation energy? a) the energy required to remove an electron from a gaseous atom b) the minimum kinetic …
What is the area under the curve for the histogram below? A. 179 B. 121 C. 194 D. 86
May i get some help on this question
A gram of gasoline produces 45 kJ of energy when burned. Gasoline has a density of 0.77 g/mL. How would you calculate the amount of energy produced by…
Using the van der Waals equation, calculate the pressure for a 1.25 mol sample of xenon contained in a volume of 1.000L at 75°C; a = 4.194 L2 atm/mol…
Keto-enol tautomerization is an important mechanism in glycolysis. What the mechanism for keto-enol conversion involve
The inside window pane in your house feels very cold to touch on a winter night. How does the heat transfer? Question 9 options: A. Heat transfers f…
can anyone help with the last 10 pages of my chemistry pcket? it would mean a lot and i could pay
What are some examples of physical properties?
What are some examples of chemical properties?
What is a physical change?
What are some examples of physical changes?
Answer:
Physical properties: how soft a blanket it, how hard bread is, what color leaves are, what bleach smells like.
Chemical change: burning wood, rotting food, digestion, rusting of a nail.
Physical change: mixing salt and sugar, tearing a piece of paper, melting ice, chopping wood.
Explanation:
Physical properties are properties that are measurable.
Chemical change is when substances combine (fire and wood make burning wood) to make another substance. They aren't reversible. If you were to melt ice, you could refreeze it, you can't unburn wood.
Physical change is something that alters the form of the substance but not the chemical composition.
Hope this helps!
Answer:
Physical properties:what color leaves are,what bleach smells like
Chemical change:burning wood, rusting of meatal
Physical change:mixing salt and sugar,melting ice
Explanation:
Pedigree: Amoeba sisters ( please help asap)
The Roman Numerals represent _____________.
_____________ ______________ ______________, if present, will lead to the expression of dominant traits. Recessive alleles only are expressed if dominant alleles are not ______________.
Answer:
The Roman Numerals reprsent generations.
Recall that in typical Mendelian inheritance, dominant alleles ,if present, will express dominant traits.
Recessive alleles only are expressed when the dominant allele is not around.
Explanation:
Miguel loves to go hiking. He is taking a hike in the Smoky Mountain National Park in Tennessee. It is a warm summer day. However, as he's hiking, he starts to feel colder. Miguel is confused. He thought the summers were warm in Tennessee. Explain why Miguel is feeling colder as he hikes in the Smoky Mountain National Park.
Answer:
It is getting colder because when you are at higher altitude the pressure gets lower. Causing the temperatures to change as he climbs up
Rosa eats a peanut butter sandwich for lunch. Peanut butter contains a lot of protein, and bread is mostly starch. Rosa plans to go for a run later this afternoon. Rosa is breathing normally. does she need from the food she ate and the air she breathes so that she can go on her run? (Sentence starter: The molecules Rosa needs from the food she eats and air she breathes are.
this science
Explanation:
Rosa eats a peanut butter sandwich for lunch. Peanut butter contains a lot of protein, and bread is mostly starch. Rosa plans to go for a run later this afternoon. Rosa is breathing normally. does she need from the food she ate and the air she breathes so that she can go on her run? (Sentence starter: The molecules Rosa needs from the food she eats and air she breathes are.
this science
Which of the following is NOT a region of the Sun? a Deuterium nucleus b The core c The convective zone d The visible surface
Answer:
A Deterium nucleus
Explanation:
The answer option which is not a region of the Sun is: A. deuterium nucleus.
What is Sun?Sun can be defined as a medium-sized, main-sequence (yellow dwarf) star that is located at the center of the solar system and it supplies the heat energy and light that sustains life on planet Earth.
According to astronomical information and records, the Sun is marked to be the brightest, largest, and most massive celestial object within the solar system and it comprises the following regions:
The core The convective zoneThe visible surfaceRead more on Sun here: https://brainly.com/question/15837114
#SPJ2
Based on The Riddle of the Rosetta Stone, what influence did many people believe Thomas Young had on the findings of Jean-François Champollion?
Many people believed Champollion continued his research because of Young’s encouragement.
Many people believed Champollion learned everything he knew about hieroglyphs from Young.
Many people believed Champollion copied Young’s idea that hieroglyphs represented sounds.
Many people believed Young was the first to inspire Champollion to decipher the writings on the Rosetta Stone.
Answer:B. 0.72 AU
Explanation:
Answer:
it is C
Explanation:
What do Venus and Earth have in common?
their gravities
their temperatures
their atmospheres
their moons
Answer:
I think their atmosphere
2. 1. Your best friend has missed a lot of school recently. Your teacher has allowed you to create a study guide and will let your friend use it on the test.
The guide should include:
• descriptions of amplitude, wavelength, frequency, and wave speed.
• Give examples of the wave relationship between amplitude and wavelength (if there is no relationship, explain how you know)
• Give examples of the wave relationship between wavelength and frequency (if there is no relationship, explain how you know)Text to speech
Answer:
Hi (best friend)! Here is what you missed!
Five wave parameters are defined and measured: the time, the frequency, the amplitude, the wavelength, and the speed. The wave length is the time it takes to pass a full phase. The frequency is just the opposite; it's the number of wave cycles that have been completed in a second.
Lets give a wave of water as an example. Its wavelength is the distance from crest to crest or from trough to trough. The wavelength can also be thought of as the distance a wave has traveled after one complete cycle—or one period. The time for one complete up-and-down motion is the simple water wave’s period T. In the figure, the wave itself moves to the right with a wave velocity vw. Its amplitude X is the distance between the resting position and the maximum displacement—either the crest or the trough—of the wave.
A 2 kg toy car and a 5 kg toy car are pushed with an equal amount of force. Which toy car will have the least acceleration?
Answer:
The 5 kg toy car will have least acceleration
Explanation:
What is another word for property?
Rosa eats a peanut butter sandwich for lunch. Peanut butter contains a lot of protein, and bread is mostly starch. Rosa plans to go for a run later this afternoon. Rosa is breathing normally.What does she need from the food she ate and the air she breathes so that she can go on her run? (Sentence starter: The molecules Rosa needs from the food she eats and air she breathes are...
Answer: What does she need from the food she ate and the air she breathes so that she can go on her run?
A. Rosa needs carbohydrates rich food (bread) to carry out her jogging activity. Protein-rich food before exercise is not recommended unless she is on a weight loss program (diet plan).
B. Rosa needs oxygen to perform aerobic respiration, which is required for maximum release of energy (36 molecules per reaction run). Anaerobic reactions yield less energy (2 molecules of ATP per reaction run) and are not recommended.
How do Rosa's body systems work together to get the molecules she needs into her cells?
Rosa's body cells need carbohydrates (glucose) and oxygen to perform aerobic respiration for the release of maximum energy. The glucose and oxygen molecules are provided to the cells via diffusion into the bloodstream. During exercise/jogging, complex molecules of carbohydrates such as starch (present in bread) are broken down into simple molecules (glucose) which are diffused into the blood. Likewise, a high amount of oxygen is provided to the body's cells via diffusion in blood, which is carried out by the faster movement of lungs and heart. The combined action results in the supply of both types of molecules to enter the cell where mitochondria use these substrates to produce energy molecules (ATPs).
How do hair cells use these molecules to release energy for her body to run?
The substrates (glucose and oxygen) enters the bloodstream and then taken up to the cell. Then they are provided to the mitochondria for the release of energy in the form of ATP. This is why mitochondria are known as the powerhouse of the cells. Within the cell, energy is released in a three-step process, i.e. glycolysis, the Krebs cycle, and oxidative phosphorylation. Here glucose reacts with oxygen. In the end, aerobic respiration per reaction run produces 36 molecules of ATP which are sufficient to meet intensive energy needs. During excrcise, the supply of oxygen and glucose is also faster due to faster lungs and heart actions.
PS: Anaerobic respiration cannot meet energy demands faster because the reaction produces only 2 ATP molecules per reaction run.
Explanation:
The molecules Rosa needs from the food she eats and air she breathes are
Food which are rich in carbohydrate to help her jog. This is because she is on a weight loss program which needs her to avoid proteinFurthermore, she would need oxygen so that she can successfully have aerobic respiration where there would be maximum release of energy to enable her complete her run better
According to the given question, we can see that Rosa wants to lose weight and she takes peanut butter which she takes and she is breathing normally which helps her perform aerobic respiration.
As a result of this, we can see that there is a need for Rosa to have the right diet which would help her with her jogging and weight loss program.
This would need foods that are rich in carbohydrate which would enable her to lose weight better and oxygen so that she could be efficient with her jogging and burn fat.
Read more here:
https://brainly.com/question/25003771
What is a chemical change?
Why do physical properties change?
Why do chemical properties change?
Is a change in matter that produces one or more substances
Chemical change
Physical change
Chemical reaction
Answer:
Chemical change
Explanation:
A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust. Chemical changes occur through the process of chemical reactions, and the resulting substances have different properties because their atoms and molecules are arranged differently.
its not physical change: What is a physical change? A physical change is a change to the physical—as opposed to chemical—properties of a substance. They are usually reversible. The physical properties of a substance include such characteristics as shape (volume and size), color, texture, flexibility, density, and mass.
its not chemical reaction: A chemical reaction is a process in which one or more substances, also called reactants, are converted to one or more different substances, known as products. A chemical reaction rearranges the constituent atoms of the reactants to create different substances as products
Hoped this helped and if you can please give brainlist :)
Measuring Physical Properties Lab Report
Instructions: In the Physical Properties lab, you will test the physical properties of different building materials in order to pick the appropriate materials for a new home in Tiny World. Record your observations and test measurements in the lab report below. You will submit your completed report.
Name and Title:
Include your name, instructor's name, date, and name of lab.
Objective(s):
In your own words, what was the purpose of this lab?
Hypothesis:
In this section, include the if/then statements you developed during your lab activity. These statements reflect your predicted outcomes for the experiment.
Procedure:
The materials and procedures are listed in your virtual lab. You do not need to repeat them here. However, you should note if you experienced any errors or other factors that might affect your outcome.
Using the summary questions, clearly define the dependent and independent variables of the experiment.
Data:
Record the results of each of your physical property tests in the table below.
Wood Clay Brick Iron Aluminum Copper Nickel
Flexibility
(?/10)
Magnetism
(number of paper clips)
Thermal Conductivity
(W/(m·K))
Electrical Conductivity
(x107 S/m)
Density
(g/cm3)
Conclusion:
Your conclusion will include a summary of the lab results and an interpretation of the results. Please answer all questions in complete sentences using your own words.
Using two to three sentences, summarize what you investigated and observed in this lab.
What building material did you use to build your house? Did your results support or fail to support your hypotheses?
What were the densities of the materials you chose for the walls and floor for the home in Tiny World? Why do you think a building material's density is important when building homes or architectural structures?
Why wouldn’t you choose wood or aluminum for the latches on your house?
Which material has the highest thermal conductivity? Which material has the highest electrical conductivity? Explain why thermal and electrical conductivity is so high with this material.
Think about where you live now or where you have lived in the past; use complete sentences to describe this environment and the weather. What building materials do you believe would work well to build a home in that area? Explain why you chose these materials.
Answer:
Wood Clay Brick Iron Aluminum Copper Nickel
Flexibility
(?/10) 3/10 2/10 4/10 7/10 6/10 5/10
Magnetism
(number of paper clips) 0 1 10 0 0 7
Thermal Conductivity
(W/(m·K)) 0.12 0.6 80 2.35 4.00 91
Electrical
(x107 S/m) 0 0 1 3.8 5.9 1.4
Density
(g/cm3) 0.64 2.04 8.83 2.46 8.62 8.40
Explanation:
Why do chemical properties change?
Answer:
because they undergo physical and chemical changes
Answer:
of matter describes its "potential" to undergo some chemical change or reaction by virtue of its composition. What elements, electrons, and bonding are present to give the potential for chemical change.
How is energy involved in physical change?
During phase changes, energy changes are usually involved. For example, when solid dry ice vaporizes (physical change), carbon dioxide molecules absorb energy. When liquid water becomes ice, energy is released. Remember that all chemical reactions involve a change in the bonds of the reactants.
Sixth-grade students conduct a laboratory experiment investigating the flow of thermal energy. They place a sealed plastic bag filled with water at 60°C into a beaker filled with an equal amount of water at 80°C. They then put the beaker with the plastic bag in an insulated container.
Based on the flow pattern of thermal energy, what can students predict will most likely happen in about an hour?
A. Thermal energy will flow from the cooler water in the plastic bag to the warmer water in the beaker so that the temperature of the water in the beaker will be 60°C and the temperature of the water in the plastic bag will be 80°C.
B. Thermal energy will flow from the warmer water in the beaker to the cooler water in the plastic bag so that the temperature of the water in the plastic bag will be 80°C and temperature of the water in the beaker will be 60°C.
C. Thermal energy will flow from the warmer water in the beaker to the cooler water in the plastic bag so that the temperature of the water in both the plastic bag and the beaker will be 70°C.
D. Thermal energy will flow from the cooler water in the plastic bag to the warmer water in the beaker so that the temperature of the water in both the beaker and the plastic bag will be 70°C.
What would happen if all the cordgrass was removed from the coast of South Carolina? pls help quickly
Answer:
the common name cordgrass. Adaptation and Distribution Gulf cordgrass grows along the Gulf Coast from Florida to Texas, and South into Eastern Mexico. More rarely, gulf cordgrass grows inland in marshes, swamps, and moist prairies. It can also be found along the Caribbean coasts, and inland in Argentina and Paraguay.
Explanation:
Hope that helped! (can u mark brainliest?)
Answer: Im not sure but ill guess and if its wrong ill tell you the answer once im finished with this
Explanation:
okay i got the test results and the answer is A; There would be rapid erosion from the entire coast, causing cities and homes to fall into the water.
My science teacher trying to be cool
Answer:
omg lol XD
Explanation:
Which of the following equations demonstrates the law of conservation of mass?
Mg + O2 ---> MgO
Ca + F2 --> CaF
Li + N3 --> Li3N
4Na + O2 ---> 2Na2O
Answer:
Mg + O2 ---> MgO
Explanation: V2O5 + CaS → CaO + V2S5. 5V2O5 + 5CaS → 10CaO + 5V2S5. 3V2O5 + 3CaS → 3CaO + 3V2S5.
Arthur made a mistake labeling the diagram of the three stages of the cell cycle.
Where is the error in the diagram?
DNA is copied during the shortest stage.
The cytoplasm divides during the longest stage.
The nucleus divides in the stage before the cytoplasm divides.
Both the nucleus and the cytoplasm divide in the same stage.
Answer:
The third one. cell Y only
Explanation: