List and describe five different ways that matter can be change when heat is added or subtracted?

Answer 1

1. Change of State

As heat is added or subtracted from matter it will change state depending on the matter

itself and the current state it's in to any one of three states. Gas at high temperature, Fluid at a lower temperature and solid at a lower still temperature.

2. Expansion Or Contraction

All three states of matter experience a change in volume depending the temperature they

are at and again the matter in question, and the ambient pressure.

3. Entropy, Molecular structure, Physical properties? I'm not sure. Anybody?

blah blah blah.

Answer 2

Matter can change in a few ways: # Solid-Liquid # Liquid-Gas # Gas-Solid # Solid-Gas # Gas-Liquid # Liquid-Solid. Using water as an example, it can melt (Solid-Liquid), it can evaporate (Liquid-Gas), it can condense (Gas-Liquid) and it can freeze(Liquid-Solid). For the Solid-Gas and Gas-Solid, there are some substances that skip the liquid stage completely such as what is commonly known as "dry ice." Dry Ice's chemical composition is composed of frozen CO2.

Answer 3

At the molecular level, there are three states of matter: Solid, liquid and gas. The molecules of a solid are extremely slow moving, the molecules of a liquid are slightly faster and the molecules of a gas are very fast. When you add heat, you are also adding energy(heat is energy) When molecules gain energy, they speed up and change state.when you take away heat, you are also taking energy.

Answer 4

Solid + heat = liquid (melting)

Liquid + heat = gas (evaporation)

Gas - heat = liquid (condensation)

Liquid - heat = solid (freezing)

Solid + heat = gas (sublimation)

Gas - heat = solid (deposition)

This assumes proper amounts of heat and that all states are possible at a give pressure. look up triple point to start to understand relationship of heat and pressure to state.

Answer 5

The five (5) different changes in phase that matter undergoes are the following:

*Melting- is the change from solid to liquid phase.

When a goldsmith wants to melt a piece of gold, he heats the gold to its melting point. Heat increases the kinetic energy of the atoms of gold and loosens the bonds between them. We may illustrate the change as follows:

GOLD + heat --------------> GOLD

(solid) (liquid)

But when you take butter out of the refrigerator on a warm day, the butter melts by itself after some time. How come? Where does the heat come from? Heat from the surrounding air on a warm day is enough to melt butter, the melting point of which is 32 C (thirty two degrees celsius)

*Evaporation- is the change from liquid to gaseous phase.

How would you arrange the liquids water, alcohol, Mercury and acetone according to their rates of evaporation? Which evaporates fastest? slowest?

The four liquids may be arrange from the fastest to evaporate to the slowest as follows: (1) acetone, (2) alcohol, (3) water, (4) mercury. The first three evaporate at room temperature. Mercury has to be heated to almost 307 C (three hundred seven degrees celsius) before it evaporates. We may illustrate the change in phase as follows:

MERCURY + heat ------------------> MERCURY

(liquid) (vapor)

In the case of acetone, alcohol and water, where does the heat come from? It comes from the surrounding air. Now, suppose you have two petri dishes------ one with 5 mL of rubbing alcohol and the other with 15 mL of the same alcohol. Which of the two will dry up first? The 5 mL sample will dry up first. The 15 mL sample will take a longer time to evaporate because it has to absorb more heat from the surroundings.

*Condensation- is the change from gas to liquid phase.

It is the reverse of evaporation. In evaporation, heat is needed to free the molecules of the liquid from each other; in condensation, heat must be removed from the gas to make the molecules move slower and come closer into the liquid phase. This is what happens when water vapor condenses on tiny particulates in the air and forms rain. We may illustrate the change in phase as follows:

WATER - heat ---------------------> WATER

(vapor) (liquid)

And where does the heat go? It is released to the surroundings. Have you noticed that it feels warm before it rains?

*Freezing- is the change from liquid to solid phase.

As in condensation, heat must be removed from the liquid to make the molecules move slower and come closer into the solid phase. This is what happens when water freezes, or solidifies into ice. We may illustrate the change in phase as follows:

WATER - heat ---------------> WATER

(liquid) (solid)

*Sublimation- is the change from solid to gas without passing through liquid form.

An example is the case of 'dry ice' (which is used to keep ice cream from melting in transport). Dry ice is carbon dioxide gas that has been converted to solid by subjecting it to high pressure and low temperature. under normal room conditions, it changes back to gas directly. We may illustrate the change as follows:

CARBON + heat - pressure -------------------> CARBON

DIOXIDE DIOXIDE

(solid) (gas)

A good question is: how does dry ice keep ice cream from melting? Notice in the word equation above that, in sublimation, heat is added to dry ice and pressure is reduced (that is, from the high pressure at which it was formed back to atmospheric pressure). Hence, at normal atmospheric and temperature, dry ice passes from the solid phase directly to the gaseous phase without passing through the liquid phase. While it is in the solid phase, the temperature of dry ice remains below the freezing point of the ice cream, thus keeping the ice cream from melting. The heat that causes the dry ice to change to gas ( also known as the heat of sublimation) comes mainly from the ice cream. What other source of heat is available and how does it get to the dry ice? This source is from the surroundings that manages to penetrate the insulation of the packaging.

SUMMARY:

Heat is added to the substance during melting, evaporation and sublimation.

-Heat is removed from the substance during condensation and freezing.

Answer 6

1. Melting: When heat is added to a solid, it can melt and transform into a liquid.
2. Boiling: Heat causes a liquid to boil and turn into a gas.
3. Freezing: When heat is removed from a liquid, it can freeze and become a solid.
4. Evaporation: Heat added to a liquid can cause it to evaporate and turn into a gas.
5. Condensation: Removing heat from a gas can cause it to condense and become a liquid.

Answer 7

solid liquid gas Bose Einstein condensate plasma