Answer:
Physical change takes place without any changes in molecular composition.
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:
What are the characteristics of Mercury? (Select all that apply.)
Mercury has less gravity than the Earth.
Mercury has many rings visible from Earth.
Mercury’s year is similar to that of Earth.
Mercury is the closest planet to the Sun.
Answer:
less gravity, closest to the sun
Answer:
Mercury has less gravity than the earth, mercury is the closest planet to the sun. I hope this helps.
Explanation:
Which describes a meteoroid? (select all that apply)
They are larger than the Sun.
Many are found in the asteroid belt.
Many are found between the Sun and Mercury.
They revolve around the Sun.
PLZ HELP ME THIS IS DUE TODAY
Which organelle aids in the production and movement of proteins and other materials through the cell?
lysosome
endoplasmic reticulum
cytoplasm
cell wall
Answer:
endoplasmic reticulum
Explanation:
I just took a test that had this question and this was the answer.
1. Calculate the frequency of each of the waves below. Make sure to include units in your answers.
Number of Wave Crests
Amount of Time Frequency
10 10 s
Protists and Fungi Quiz
Answer:
thank you for the points
Explanation:
Study the diagram of the two animals.
Which statement best describes the animals?
Animal X begins life as a tadpole, and animal Y begins life as a larva that looks like the adult.
Animal X begins life as a larva that looks like the adult, and animal Y begins life as a tadpole.
Both animal X and animal Y begin life as a tadpole and change form as they develop.
Both animal X and animal Y begin life as a larva that looks like the adult.
Answer:
Animal X begins life as a tadpole, and animal Y begins life as a larva that looks like the adult.
Explanation:
brainleist please
Why does Mercury have almost no atmosphere?
Mercury spins on its axis too fast to have an atmosphere.
Radiation from the Sun blows the atmospheric particles off into space.
Mercury's gravity is too weak to hold an atmosphere.
Mercury orbits the Sun at such high speed that the atmosphere is blown away.
Answer:
There are two main reasons. First, Mercury is small and doesn't have much gravity so it's hard to hold onto an atmosphere. Second, Mercury is close to the Sun so any atmosphere gets blasted away by stuff being blown off the Sun.
Explanation:
Because Mercury has no atmosphere, it can't hold onto its heat very well. The night side of Mercury gets very cold, which brings down the average temperature of the planet and makes it only the second hottest planet in the Solar System after Venus.
The amount of water vapor in a given volume of air is ______________ .The amount of water vapor in the air at any one time depends on ______________ . Warmer air holds ______________ water thancooler air. Clouds form when humidity is ______________ and thetemperature is ______________ . ______________ humidity is definedas the amount of water vapor in the air ______________ by the amountthat would have to be present in the same air to form a ______________ or condense on a surface. ______________ is related to the humidityof the previous day. The air temperature at which water vapor in the air ______________ onto cool surfaces is the dew point.
The words:
humidity
temperature
more
high
low
relative
divided
cloud
dew
condenses
if u answer this I sware u'll be brainliest bc this is so important, thank u u r soo kind and much appreciated if u please
God Bless
Answer:
The amount of water vapor in a given volume of air is humidity.The amount of water vapor in the air at any one time depends on temperature . Warmer air holds more water than cooler air. Clouds form when humidity is low and thetemperature is high . Relative humidity is defined as the amount of water vapor in the air divided by the amount that would have to be present in the same air to form a cloud or condense on a surface. Dew is related to the humidity of the previous day. The air temperature at which water vapor in the air condenses onto cool surfaces is the dew point.
Explanation:
here we go again.......
Answer:
i think it might be C
sorry if it is wrong
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
When the Sun is in its maximum solar cycle, which of the following occurs?
One CME is produced every five days
There is an unpredictable amount of energy
Up to three CMEs are created in one day
Protons and neutrons accelerate
Answer:
One CME is produced every five days
Explanation:
Answer:
Up to three CMEs are created in a day.
Explanation:
I took the test and "one every five days" was incorrect, and Up to three CME's a day was right.
PLEASE HELP WILL GIVE BRAINLIEST
Answer:
I think It's either A. or C.
Explanation:
Answer:
C
Explanation:
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
Which Jovian planet is furthest from the Sun?
Jupiter
Neptune
Earth
Saturn
Answer:
neptune
Explanation:
Which statement describes how heat is transferred by radiation?
Air molecules touch the warm ground, heating them up.
Sunlight travels through space without the aid of fluids or solids.
Air at the equator rises and sinks at the poles.
Warm air rises and takes heat with it; eventually it cools and sinks.
Answer:
convection current waves
Explanation:
The study of chemicals is called chemistry.
The correct answer is D.
The heat convention is stated as the transfer of heat from one place to another due to the movement of fluid. Although often discussed as a distinct method of heat transfer, convective heat transfer involves the combined processes of conduction and advection.
According to the question, the warm air rises up and travels along with the air.
The hot air also has a high temperature due to which the radiation of the heat transfer from one place to another.
Hence, the correct answer is D that is Warm air rises and takes heat with it; eventually, it cools and sinks.
For more information, refer to the link:-
https://brainly.com/question/25305623
Which statement best compares segmented worms and roundworms?
Some segmented worms have setae, but roundworms do not.
Some roundworms have setae, but segmented worms do not.
Segmented worms have sense organs, but roundworms do not.
Roundworms have sense organs, but segmented worms do not.
The statement which best compares segmented worms and roundworms is that some segmented worms have setae, but roundworms do not.
What are roundworms?Roundworms constitute the phylum Nematoda (also called Nemathelminthes), with plant-parasitic nematodes also known as eelworms. They are a diverse animal phylum inhabiting a broad range of environments. Less formally, they are categorized as helminths, but are taxonomically classified along with arthropods, tardigrades and other moulting animals in the clade Ecdysozoa, and unlike flatworms, have tubular digestive systems with openings at both ends. Like tardigrades, they have a reduced number of Hox genes, but their sister phylum Nematomorpha has kept the ancestral protostome Hox genotype, which shows that the reduction has occurred within the nematode phylum.
Nematodes species can be difficult to distinguish from one another. Consequently, estimates of the number of nematode species described to date vary by author and may change rapidly over time. A 2013 survey of animal biodiversity published in the mega journal Zootaxa puts this figure at over 25,000. Estimates of the total number of extant species are subject to even greater variation.
Learn more about roundworms,here:
https://brainly.com/question/970980
#SPJ3
Molecules can be made of
A. the same element only.
B. different elements only.
C. the same or different elements.
Answer:
I'm sure the answer is C. the same or different elements.
Explanation:
If I'm wrong tell me, but I am 100% sure that's the answer :)
is a plant homogenerous,hetergeneous,or a substance
Answer:
hetergeneous I hope this helps!
Label the diagram.Please actually say the answer!
Answer:
Don't take my word for it, but I think its Radiant to electrical, in all means I can be wrong so again, don't take my word for it
. Guillermo was finding it difficult to walk up the steps to his family’s apartment. His doctor thinks that his cells might not be getting enough oxygen or glucose. Which body systems should the doctor test in order to find out whether Guillermo’s cells are getting enough oxygen and glucose and why? (Sentence starter: The body systems Guillermo should have tested are .
Answer:
Because oxygen is the combustion fuel and glucose is the substrate needed for synthesis of energy as ATPs during cellular respiration.Therefore Guillermo lacks enough energy as ATPs in her body cells, especially skeletal muscles cells to complete the task of ascending the s steps.
For all the mitochondrial in cells(sites of energy production) to receive needed glucose,and other metabolites needed for energy synthesis; an efficient transport system is needed, so that these materials are available immediately, in required amount. This system is called circulatory system.
And for the the supply of combustion fuel (oxygen) needed for the completion of the ATP synthesis mechanisms; respiratory systems which convey oxygen from the external environments to the circulatory system through breathing mechanisms, for distribution is needed.
Thus the doctor needs to test both the circulatory and respiratory systems.
Explanation:
Please answer the following essay question with 5-7 sentences.
How is a chemical change different from a physical change?
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
Opinion on Cheez-Its?
Answer:
yes
Explanation:
none needed
Answer:
so yummy
Explanation:
yummy
1. Artificial diamonds are made using thallium carbonate. If thallium has an oxidation number of 1+, what is the formula for the compound?
2. Explain what electric forces between oppositely charged electrons and protons have to do with chemical reactions.
3. If the linear molecule beryllium dichloride (BeCl₂) has polar bonds because CI attracts electrons more strongly than Be, why is the molecule nonpolar?
Answer:
Artificial diamonds are made using thallium carbonate. If thallium has an oxidation number of 1+ number 2 A chemical bond is a lasting attraction between atoms, ions or molecules that enables the formation of chemical compounds. The bond may result from the electrostatic force of attraction between oppositely charged ions as in ionic bonds or through the sharing of electrons as in covalent bonds. number 3 giant metallic, giant ionic, simple molecular, and macromolecular ... it has positive ions surrounded by a sea of delocalised electrons ... m/z value than Cl⁻. this means that F⁻ is more attracted to the Ca²⁺ ion more strongly ... What bond angle does beryllium chloride, BeCl₂ have? ... Give two examples of linear molecules.
The formula of thallium carbonate is Tl₂CO₃. The intermolecular force of attraction between electrons and protons proceed to the combination of two atoms. The net dipole moment in BeCl₂ is zero since they cancel each other due to linear geometry.
What is thallium carbonate?Thallium carbonate is an inorganic compound formed by the ionic bonding between thallium and carbonate group. The charge of thallium Tl is +1 and that of carbonate group is -2. Hence the chemical formula of the compound is Tl₂CO₃.
Unstable atoms with deficient number of electrons combines with other atoms to form compounds. The force that act between the two atoms is called intermolecular force of attraction.
The electrons of an atom is attracted by the positive charge of nucleus of other atom results in the chemical bonding.
Barium chloride is an ionic compound with linear geometry. The chlorine atom is highly electronegative and will attract the shared pair of electrons into it.
The two chlorines are arranges linearly on either side of Be thus, the dipole will be opposite in direction towards each chlorine atoms. Thus it cancel and net dipole moment become zero. That's why the compound is nonpolar.
To find more on polarity, refer here:
https://brainly.com/question/3184550
#SPJ2
Is a change in matter that produces one or more substances?
Answer:yes
Explanation:
Yea
How are dwarf planets and major planets similar? (Choose all that apply)
They both travel through space in a path around the Sun.
They both have enough mass and gravity to be nearly round.
They both travel around the Sun at the same distance.
They both have other objects in their orbit.
Answer:
Dwarf planets do not travel around the Sun. ... Unlock all answers ... Dwarf planets do not have enough mass and gravity to be nearly round. Dwarf planets have not cleared other objects out of their orbital paths. ... 2039471 is waiting for your help. ... You might be interested in Everyone knows that Earth, Mars and Jupiter are planets. But both Pluto and Ceres were once considered planets until new ... It must be big enough to have enough gravity to force it into a ... It must be big enough that its gravity cleared away any other objects of a similar size near its orbit around the Sun.A planet is a large space body which reflects the light of a star around which it revolves. The planets in our solar system are classified as inner planets and outer planets ... Consequently, you will find craters of varying sizes on the inner planets and ... an object must be in orbit around the Sun, have enough mass so that it has
Explanation:
What happens to elements and compounds that are dissolved in a solution when the water evaporates?
They become liquid.
They crystallize.
They disappear.
They gain special properties.
Answer:
They crystallize.
Explanation: just took the test
What kind of group 1 atoms are the most reactive? a. Small atoms c. Atoms with the most electrons in the valence level b. Large atoms d. Atoms at the top of the periodic table
Answer:
large atoms
Explanation:
its kinda obvious
Answer:
large atoms (B)
Explanation:
How would you compare Uranus (a Jovian planet) to Earth (a terrestrial planet)?
Earth is larger than Uranus.
Uranus is larger than Earth.
They are the same size.