Which of the following could solid ice become if heat energy is added? (Check all that apply)

None of the above, energy needs to be removed

States Of Matter & Phase Changes

2.

If isopropyl alcohol is a liquid at room temperature (25 degrees Celsius), which of the following must its boiling point be?

0 Degrees Celsius
20 Degrees Celsius
25 Degrees Celsius
82 Degrees Celsius

Correct Answer

A. 82 Degrees Celsius

Explanation

Isopropyl alcohol is a liquid at room temperature (25 degrees Celsius), which means its boiling point must be higher than 25 degrees Celsius. Among the given options, the only temperature that is higher than 25 degrees Celsius is 82 degrees Celsius. Therefore, the boiling point of isopropyl alcohol must be 82 degrees Celsius.

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12

3.

Which of the following terms identifies the change from a liquid to solid?

Melting
Solidification
Boiling
Sublimation

Correct Answer

A. Solidification

Explanation

Solidification is the process by which a substance changes from a liquid state to a solid state as it loses heat. During solidification, the particles in the liquid slow down and arrange themselves into a more ordered and tightly packed structure, forming a solid. This transition occurs when the temperature of the substance decreases to the point where its thermal energy is not sufficient to maintain the random movement of particles associated with the liquid phase.
The opposite process, where a solid changes to a liquid, is known as "melting." Solidification and melting are two fundamental phase transitions that occur in matter as it experiences changes in temperature.

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7

4.

Oxygen becomes a gas at -183 degrees Celsius. We would call this temperature?

Boiling point
Evaporating point
Sublimation point
Freezing point

Correct Answer

A. Boiling point

Explanation

The correct answer is boiling point. Oxygen becomes a gas at -183 degrees Celsius, which is the temperature at which it boils and changes from a liquid to a gas state.

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6

5.

The following occurs when heat energy is removed:Gas ---(A)--> Liquid ---(B)---> SolidWhat would be the phase changes for A and B respectfully?

Melting, Evaporating
Melting, Condensation
Condensation, Freezing
Condensation, Melting
Boiling, Freezing

Correct Answer

A. Condensation, Freezing

Explanation

When heat energy is removed, the gas phase changes into a liquid phase, which is called condensation. This corresponds to option C. Then, the liquid phase changes into a solid phase, which is called freezing. This corresponds to option D. Therefore, the correct phase changes for A and B respectively are condensation and freezing.

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4

6.

Examine the following sequence of phase changes:Solid ---> Liquid ---> GasWould we need to ADD or REMOVE heat energy?

Add heat energy
Remove heat energy
Neither

Correct Answer

A. Add heat energy

Explanation

In order to change a solid into a liquid and then into a gas, heat energy needs to be added. This is because heat energy is required to break the intermolecular forces holding the particles together and allow them to move more freely. Therefore, in this sequence of phase changes, heat energy needs to be added.

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8

7.

Freezing is to solid, as sublimation is to ______________________

Solid
Liquid
Gas

Correct Answer

A. Gas

Explanation

Freezing is the process of a substance changing from a liquid to a solid state, while sublimation is the process of a substance changing directly from a solid to a gaseous state without passing through the liquid state. Therefore, the analogy suggests that just as freezing is associated with the transformation from liquid to solid, sublimation is associated with the transformation from solid to gas.

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8

8.

If chemical "X" had the following physical properties: Melting Point = - 32 Degrees Celsius Boiling Point = -11 Degrees Celsius what state of matter would you find Chemical "X" if the temperature was 0 Degrees Celsius?

Solid
Liquid
Gas

Correct Answer

A. Liquid

Explanation

At 0 degrees Celsius, which is the freezing point of water, chemical "X" would be in a liquid state. This is because its temperature is above its melting point (-32 degrees Celsius), but below its boiling point (-11 degrees Celsius). In this temperature range, the substance is in a liquid state.

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6

9.

When isopropyl alcohol was spilled over the counter top and quickly disappeared, what phase change occurred?

Evaporation
Boiling
Condensation
Sublimation

Correct Answer

A. Evaporation

Explanation

When isopropyl alcohol is spilled over a counter top and quickly disappears, it indicates that a phase change of evaporation has occurred. Evaporation is the process by which a liquid, in this case, isopropyl alcohol, changes into a gas or vapor state at a temperature below its boiling point. The rapid disappearance of the spilled alcohol suggests that it has transformed into a gas and dispersed into the surrounding air.

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3

10.

A student noticed frost was on the ground at 6:30 a.m. but noticed it disappeared by 8:30 a.m. What phase change was responsible for turning the frost into water vapor?

Melting
Evaporation
Sublimation
Deposition

Correct Answer

A. Sublimation

Explanation

The phase change responsible for turning the frost into water vapor is sublimation. Sublimation is the process in which a solid directly changes into a gas without going through the liquid phase. In this case, the frost on the ground skipped the melting phase and directly turned into water vapor due to the low temperature and pressure conditions.

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3

States Of Matter & Phase Changes

Which of the following could solid ice become if heat energy is added? (Check all that apply)

Quiz Preview

If isopropyl alcohol is a liquid at room temperature (25 degrees Celsius), which of the following must its boiling point be?

Which of the following terms identifies the change from a liquid to solid?

Oxygen becomes a gas at -183 degrees Celsius. We would call this temperature?

The following occurs when heat energy is removed:Gas ---(A)--> Liquid ---(B)---> SolidWhat would be the phase changes for A and B respectfully?

Examine the following sequence of phase changes:Solid ---> Liquid ---> GasWould we need to ADD or REMOVE heat energy?

Freezing is to solid, as sublimation is to ______________________

If chemical "X" had the following physical properties: Melting Point = - 32 Degrees Celsius Boiling Point = -11 Degrees Celsius what state of matter would you find Chemical "X" if the temperature was 0 Degrees Celsius?

When isopropyl alcohol was spilled over the counter top and quickly disappeared, what phase change occurred?

A student noticed frost was on the ground at 6:30 a.m. but noticed it disappeared by 8:30 a.m. What phase change was responsible for turning the frost into water vapor?