1.
Explain what changes occur in particle motion, temperature,
and state of a pure substance when thermal energy is added
or removed.
Type your answer here
Answers
Answer:
Thermal energy is heat energy.
When it is removed, the temperature of particle decreases due to decrease in the internal energy involving that particle.
Motion of the particle decreases due to decrease in kinetic energy caused by reduction in the internal energy.
The state of the particle changes from that current state e.g liquid or gas to a solid state due to increase in the latent heat of vapourisation.
With thermodynamics we can find that by giving energy to a substance the temperature increases and after a certain value it can change from solid to liquid and vapor state
In the opposite case, as the energy of a substance decreases, the temperature decreases and goes from a gaseous state to a liquid and a solid.
Thermodynamics study the changes that substances have as their energy changes, finding macroscopic relationships such as temperature, state, pressure and volume.
The temperature of a substance is a measure of the internal energy of the particles and the thermodynamic state of a substance can be solid, liquid or gaseous depending on whether the shape and volume is maintained.
Let's analyze what happens when we increase the energy of a substance.
In this case, the particles that form has more energy, so the temperature of the substance increases, if the energy is enough to break any bonds, the substance can go from the solid state to the liquid and by continuing to increase the energy it can be break all the bonds going from the liquid to the gaseous state.
In the opposite case, when the energy of the particles decreases, it has smaller movements, therefore its temperature decreases and if some bonds are formed, the substance stops from the gaseous state to the liquid state and if the energy continues to decrease, more bonds are formed passing the liquid state to solid.
In conclusion, with the change in energy, the temperature changes in the same direction and after a certain value it can go from solid to liquid and as the temperature increases more it can go from liquid to gas.
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Related Questions
Each of the thermometers shows a different
temperature scale. The thermometer on top
measures temperature in Celsius degrees. The
thermometer on the bottom measures temperature in Fahrenheit degrees. The
thermometers are placed so that the freezing point of water is even on each scale as a reference. The freezing point of water is 32 degrees F. If the boiling point of water is 212 degrees F, what is the boiling point of water in
degrees C (Celsius)?
Answers
Answer:
100 degrees Celsius
Explanation:
If you look at the to number lines you want to find 212 degrees Fahrenheit on the bottom line then look at the top number line where the 212 lines up which is 100 degrees Celsius.
2. what do u mean by
Decomposition chemical Reaction
Answers
A decomposition reaction is a reaction in which a compound breaks down into two or more simpler substances.
A chemical equation is balanced when the number of each
type of
__ is the same on both sides of the equation.
Answers
Answer: Atom/element
Explanation: Since matter cannot be created or destroyed, the number of atoms has to be equal on both sides of the equation.
A balloon is inflated with helium to a volume of 45L at room temperature (298K). If the balloon is cooled to 200.K, what is the new volume of the balloon?
Answers
Answer:
V₂ = 30.20 L
Explanation:
Given data:
Initial volume = 45 L
Initial temperature = 298 K
Final temperature = 200 K
Final volume = ?
Solution;
The given problem will be solve through the Charles Law.
According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.
Mathematical expression:
V₁/T₁ = V₂/T₂
V₁ = Initial volume
T₁ = Initial temperature
V₂ = Final volume
T₂ = Final temperature
Now we will put the values in formula.
V₁/T₁ = V₂/T₂
V₂ = V₁T₂/T₁
V₂ = 45 L × 200 K / 298 k
V₂ = 9000 L.K / 298 K
V₂ = 30.20 L
Which type of bond will form between these elements? *
WHICH BONO
Covalent
Metallic
lonic
Please I need the answer I had a stomach virus and didn’t get to study for my test
Answers
Answer:
Please mention elements so i can answer it
Explanation:
Which of the following is an element?
A.
zinc metal (Zn)
B.
magnesium chloride salt (MgCl)
C.
hydrochloric acid (HCl)
D.
carbon monoxide gas (CO)
Answers
Answer:
A. zinc metal
Explanation:
Zinc is a chemical element with the symbol Zn and atomic number 30. Zinc is a slightly brittle metal at room temperature and has a blue-silvery appearance when oxidation is removed. It is the first element in group 12 of the periodic table.
Answer:
A.) Zinc (Zn) is a metal
Explanation:
Hope this helps!
3. How are ice and plant roots weathering agents?
Answers
Answer:
Explanation:
When rocks, land formations and minerals begin to break down and dissolve, it's called weathering. After crumbling, the process of erosion transports these broken bits away by wind or rain. Agents responsible for weathering include ice, salts, water, wind and plants and animals.
What are these answers I am confused
Answers
Answer:
electrical in among us is kinda sus
Explanation:
Which of the following is the best description of an element?
a
A material that has a specific shape at a specific temperature
b
A pair of atoms that have different abilities when joined together
c
A substance that cannot be broken down into simpler substances
d
A naturally occurring mineral made of more than one substance
Answers
Answer:
c . A substance that cannot be broken down into simpler substances
Explanation:
The best description of an element is that it is a substance that cannot be broken down into simpler substances.
An element is a pure substance but it is the simplest unit by which chemical reactions can take place.
Elements are made up of identical atoms within their structure. When compounds form, elements are simply rearranging and combining with one another to give a certain product. There over 100 elements on the periodic table. But millions of compounds exists in nature because elements can combine in diverse ways.Which process results in the formation of sedimentary rocks?
A. Rock fragments are layered and pressurized over time.
B. Rocks are sorted under a glacier as the glacier retreats.
C. Rocks are heated and changed by volcanic forces quickly.
D. Rocks that contain two or more minerals melted together.
Answers
Answer:
A. Rock fragments are layered and pressurized over time.
Explanation:
Sedimentary rocks are derived from pre-existing rocks that have been subjected to agents of denudation, weathered, transported and deposited within a basin.
In the basin, the sediments are accumulated in their final resting position.
Sediments are accumulated as layers on top of one another. The pressure of the sediment on top of another forces out water and presses the layers into sheets. Over time, the compression leads to lithification of the rock. During lithification, compaction and cementation occurs.What would likely to happen if
the wind hit the mountain? Will it
change direction?
Answers
Answer:
yes it willl change and like this moonson happens.
Answer:
hanyuk gaasss kannnn belajarrr
If 18.7 grams of an aqueous solution of ammonium fluoride, NH4F, contains 1.26 grams of ammonium fluoride, what is the
percentage by mass of ammonium fluoride in the solution?
Answers
The percentage by mass of ammonium fluoride in the solution : 6.738%
Further explanationGiven
18.7 g of NH4F solution
1.26 g NH4F
Required
The percentage by mass
Solution
[tex]\tt \%mass=\dfrac{mass~solute}{mass~solution}\times 100\%[/tex]
mass solute = mass Ammonium fluoride
mass solute = 1.26 g
mass solution = 18.7 g
Input the value :
[tex]\tt \%mass=\dfrac{1.26}{18.7}\times 100\%\\\\\%mass=6.738[/tex]
Which of the following occurs in cells only produce male and female cells
Answers
Answer:
I think its B
Explanation:
What is hydrogen peroxide ?
Answers
chemical that appears as a colorless liquid, is used in a wide range of cleaning and personal care products, including hair dyes and bleaches, toothpaste and mouthwashes, bathroom cleaners and laundry stain removers. Hydrogen peroxide can also be found in over-the-counter first aid antiseptics, and it is used as a bleaching agent in some food products. It has other consumer and industrial uses as well, including water treatment.
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What is the point of using a chemical formula?
Answers
Identify the chemical reaction Below:
KOH + AlCl3 + AlCl3+ KCI
Answers
Answer:
Double displacement reaction
Explanation:
Given expression:
KOH + AlCl₃ → Al(OH)₃ + KCl
The reaction shown above is a double displacement reaction or double decomposition or double replacement reaction. This type of reaction involves an actual exchange of partners to form new compounds.
For example:
AB + CD → AD + CB
Such reactions are driving by one of the following factors:
formation of an insoluble compoundformation of water or any other non-ionizing compoundliberation of a gaseous productY'all wanna help me with chemistry? The chart and bottom question for brainliest!
Answers
Answer:
As: Negative
Rb: Positive
Te: Positive
Al: Positive
Possible answers: conduction, convection, radiation Heat is carried away from the pot in all different directions. This shows: Warm water rises within the pot. This shows: Heat moves from the flame to the pot's bottom. This shows:
Answers
Answer:
Heat is carried away from the pot in all different directions. This shows: RADIATIONWarm water rises within the pot. This shows: CONVECTIONHeat moves from the flame to the pot's bottom. This shows: CONDUCTIONExplanation:
Conduction involves transfer of heat energy through a solid medium; convection involves heat transfer of fluid particles in their masses, while thermal radiation is transfer via electromagnetic waves in a vacuum.
I hope this was helpful.
Lets study what conduction, convection and radiation are:
Conduction explains the process in which the transfer of heat takes place between objects by direct contact. Convection refers to the form of heat transfer in which energy transition occurs within the fluid. It helps the heat to pass through fluids. Radiation helps the heat to flow through empty spaces.Learn more:
brainly.com/question/9382711
could someone answer the first one for me, i’ll give brainliest. thx!
Answers
Answer:
B.....................
Explanation:
....... ......... .......... ......... ............ ....... ...
which of the following gases can be dried using concentrated sulfuric acid? Ammonia, Chlorine, Hydrogen Chloride.
Answers
Answer:
Both chlorine [tex]{\rm Cl_2}\, (g)[/tex] and hydrogen chloride [tex]{\rm HCl}\, (g)[/tex].
Concentrated sulfuric acid should not be used to dry ammonia because ammonia itself would react with sulfuric acid.
Explanation:
Keep in mind that concentrated sulfuric acid is:
Acidic, andCapable of oxidizing many substances.Because of its acidity, concentrated sulfuric acid will readily react with gases that form basic solutions when mixed with water. Therefore, concentrated sulfuric acid should not be used to dry those gases. Neither should concentrated sulfuric acid be used to dry gases that might lose electrons to concentrated sulfuric acid. Otherwise, a significant portion of those gas would be consumed in those unexpected chemical reactions.
AmmoniaAmmonia is one such gas. Because the solubility of ammonia in water is remarkably high, the humid ammonia gas in this question would likely exist in the form [tex]\rm NH_4OH[/tex]. When that gas comes into contact with sulfuric acid [tex]\rm H_2SO_4[/tex], the following reaction could take place:
[tex]\rm 2\, NH_4OH + H_2SO_4 \to (NH_4)_2 SO_4 + 2\, H_2O[/tex].
As long as concentrated sulfuric acid isn't used up, very little ammonia would exit from the other side of the drying apparatus. Hence, concentrated sulfuric acid shouldn't be used to dry ammonia.
Chlorine and HClConcentrated sulfuric acid does not react with chlorine or HCl under typical lab conditions. Therefore, it should be possible to dry chlorine [tex]{\rm Cl_2}\, (g)[/tex] and [tex]{\rm HCl}\, (g)[/tex] with concentrated sulfuric acid in a lab.
the atom has a positively charged center called the ____ and negatively charged particles called ____ revolving around the center
Answers
Answer: Positive- Protons
Negative- Electrons
Explanation:
24897Bk ---> 24797Bk + 10n + _____
Answers
Answer:
Explanation:
What is this?
2. Which of the following does not have a nucleus? a. prokaryotes b. eukaryotes c. prokaryotes and eukaryotes
Answers
Answer:
Erythrocytes
Erythrocytes do not contain a nucleus. This would make answer choice "A" correct. Erythrocytes are red blood cells and these cells differ from the other cells of the body because of the absence of the nucleus. All the other cells noted have nuclei.
Explanation:
Have A Wonderful Day !!
Answer:a. Prokaryotes
Explanation:
2. What are the ions present in the compound CsF? *
(1 Point)
O Cs- and F-
Cs- and F+
Cs+ and F-
Cs and F only
Answers
Answer:
Cs+ and F-
Explanation:
The compound CsF is made up of two elements; Caesium (Cs) and F (Flourine)
Caesium is a metal and would therefore lose electrons - a cation is formed. When Caesium loses a single electron, the ion symbol is given as; Cs+
Flourine is a non metal and would therefore gain electrons - an anion is formed. When Flourine gains a single electron, the ion symbol is given as; F-
Hence the correct option is;
Cs+ and F-
Which of the following is not a reason to volunteer?
A
to make money
B
to feel good about yourself
C
to have a sense of accomplishment
D
to gain experience
Answers
Answer:
A. To make money
Explanation:
Answer:
hi
Explanation:
A. to make money
have a nice day
bye
find the mass of a sample of methane (CH₄) if it contains 5.6x10²⁴ molecules of methane.
chapter: mole
Answers
Answer:
what do you mean by magnetic and sound energy
Which set of elements will have similar reactivity?
Answers
Answer:
B and C
Explanation:
Answer:
C
Explanation:
K,Na, Li all elements found in group 1
Which is the correct order largest to smallest
Answers
Answer:
how am i suppose to put it in largest to smallest if u didnt give any numbers
I BET NO ONE KNOWS THIS 10. Which of the following words is closest to the same meaning as hypothesis?
fact
law
formula
suggestion
conclusion
Answers
Answer:
conclusion.
Explanation:
Hypothesis is what you think will happen, but you don't yet know the answer or conclusion. You're suggesting something that may happen with reason.
Draw the Lewis structure for CO3 2- including any valid resonance structures. Explain the reason for more than one valid structure. Please draw me a picture if you can!