Air is composed of many different gasses, while water is a pure substance. Which choice best compares air and water?(1 point)

Question

Responses

Air is a mixture of two or more components that keep their own identifying properties, while water is composed of compounds that combine forming a mixture.
Air is a mixture of two or more components that keep their own identifying properties, while water is composed of compounds that combine forming a mixture.

Air is a compound of two or more components that keep their own identifying properties, while water is composed of mixtures that combine forming a compound.
Air is a compound of two or more components that keep their own identifying properties, while water is composed of mixtures that combine forming a compound.

Air is a compound of two or more components that keep their own identifying properties, while water is composed of elements that combine forming a mixture.
Air is a compound of two or more components that keep their own identifying properties, while water is composed of elements that combine forming a mixture.

Air is a mixture of two or more components that keep their own identifying properties, while water is composed of elements that combine forming a compound.

jayla did an investigation about the different states of matter. As part of the investigation, she wanted to change a liquid into a solid. What must she do to bring about this change in state?(1 point)
Responses

place the liquid in a different container
place the liquid in a different container

increase the energy of the liquid so that its particles move faster
increase the energy of the liquid so that its particles move faster

remove energy from the liquid so that its particles slow down
remove energy from the liquid so that its particles slow down

stir the liquid as quickly and thoroughly as possible
stir the liquid as quickly and thoroughly as possible

Reggie puts a beaker of ice and water on a hot plate. He observes the ice slowly melt as shown in diagram below. After a few minutes, only liquid water is left in the beaker. Eventually, the water becomes hot enough to boil. The liquid water changes to water vapor, which is a gas.


Image


How is the ice different from the water vapor that forms once the water begins to boil?

(1 point)
Responses

The ice particles have less energy.
The ice particles have less energy.

The ice particles move faster.
The ice particles move faster.

The ice has a higher temperature.
The ice has a higher temperature.

The ice has a lower boiling point.

When heat is added to water, it becomes a gas called water vapor. What happens to the water particles after the the heat is applied?(1 point)
Responses

The particles slow down and move closer.
The particles slow down and move closer.

The particles bump into each other.
The particles bump into each other.

The particles slide past one another.
The particles slide past one another.

The particles move rapidly and spread far apart.

Which statement correctly describes why hot liquids have more energy of motion compared to cold liquids?(1 point)
Responses

Hot liquids have a higher number of particles.
Hot liquids have a higher number of particles.

Cold liquids have less electrons.
Cold liquids have less electrons.

Particles in hot liquids move faster.
Particles in hot liquids move faster.

Particles in hot liquids move slower.

Answer 1

Let's go through each question and identify the best answers:

1. Comparison of Air and Water:

   • Best choice: Air is a mixture of two or more components that keep their own identifying properties, while water is composed of elements that combine forming a compound.
   • Explanation: Air is made up of various gases (like nitrogen and oxygen) that maintain their individual properties, while water is a compound (H₂O) formed from hydrogen and oxygen.

2. Changing a Liquid to a Solid:

   • Best choice: Remove energy from the liquid so that its particles slow down.
   • Explanation: To change a liquid into a solid, you need to decrease the energy of the liquid, allowing the particles to slow down and arrange themselves into a solid structure.

3. Difference Between Ice and Water Vapor:

   • Best choice: The ice particles have less energy.
   • Explanation: Ice particles are in a solid state with less kinetic energy compared to water vapor, which is in a gaseous state with higher energy.

4. Effect of Heat on Water Particles:

   • Best choice: The particles move rapidly and spread far apart.
   • Explanation: When heat is applied, the energy increases, causing the water particles to move faster and spread apart, transforming from liquid to gas (water vapor).

5. Energy of Motion in Hot vs. Cold Liquids:

   • Best choice: Particles in hot liquids move faster.
   • Explanation: The temperature of a liquid is related to the kinetic energy of its particles; hot liquids have particles that move more rapidly than those in cold liquids.

If you have any more questions or need further clarification, feel free to ask!