Particle Model of Water

How do gases behave in a container?

• Cluster together

• form a solid

• They take the shape of their container

• leak out 

Answer explanation

Gases, unlike solids and liquids, do not have a definite shape or volume. Instead, they expand to fill their container, taking on its shape. This is because gas particles move freely and spread out evenly in all directions. Therefore, the correct answer to the question is 'They take the shape of their container'.

Tags

NGSS.MS-PS1-4

Which states allow easy flow of particles

• Gas and Solid

• Gas and Liquid

• Solid and Liquid

• Gas only

Answer explanation

In the question, we are asked about the states that allow easy flow of particles. The correct answer is 'Gas and Liquid'. In these states, particles have more freedom to move around, resulting in an easier flow. In contrast, solid particles are tightly packed and have limited movement, making it difficult for them to flow.

Tags

NGSS.MS-PS1-4

How do materials change from one state of matter to another?

• They gain or lose energy

• They break appart

• The particles get stickyer

• They are magnetised to themselves

Answer explanation

Materials change from one state of matter to another by gaining or losing energy. When a material gains energy, its particles move faster and spread apart, causing it to change from a solid to a liquid or a liquid to a gas. Conversely, when a material loses energy, its particles slow down and come closer together, causing it to change from a gas to a liquid or a liquid to a solid.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which description best matches this particle model?

• Particles are closely packed and vibrate in place. 

• Particles are close together but can move a lot. 

• Particles have lots of energy and can move around. 

Answer explanation

The particle model described in the question best matches the option 'Closely packed and can't move a lot.' This is because the particles in this model are tightly packed together, limiting their movement and energy. The other options do not accurately describe the particle model in question.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If a balloon is cooled what will happen to the volume?

• Volume will increase

• Volume will decrease

• Volume will not change

Answer explanation

When a balloon is cooled, the gas particles inside it lose energy and move slower, causing them to take up less space. As a result, the volume of the balloon decreases. This is in accordance with Charles' Law, which states that the volume of a gas is directly proportional to its temperature, assuming constant pressure.

Tags

NGSS.MS-PS1-4

Adding HEAT to matter causes its particles to:

• move faster and farther apart

• Move slower and farther apart

• Move faster and closer together

• Move slower and closer together

Answer explanation

When heat is added to matter, it increases the kinetic energy of its particles, causing them to move faster. As a result, the particles tend to spread out or move farther apart. Therefore, the correct answer to the question is 'move faster and farther apart'.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following is not a state of matter

• Ice

• Gas

• Liquid

• Solid

Answer explanation

The question asks which of the given options is not a state of matter. The states of matter are typically identified as solid, liquid, and gas. Ice is a form of water, which is a substance that can exist in all three states, but 'Ice' itself is not a state of matter. Therefore, the correct answer is 'Ice'.

Tags

NGSS.5-PS1-1

NGSS.5-PS1-3

Which image show the particles with the greatest amount of energy?

• The particle model to the left.

• The particle model in the middle.

• The particle model to the  right.

Answer explanation

The particle model to the right shows the particles with the greatest amount of energy. This is because particles with higher energy levels tend to move more rapidly and spread out, as seen in the rightmost image. The other models depict particles with lower energy levels, as they are more closely packed and move less vigorously.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

How do the particles of matter move as the matter changes state in the diagram?

• The particles released energy and move as matter changed state?

• The particles released energy and moved more quickly.

• The particles gained energy and moved more slowly.

• The particles gained energy and moved more quickly.

Answer explanation

As matter changes state, the particles gain energy and move more quickly. This is because the energy absorbed by the particles causes them to vibrate or move faster, leading to a change in the state of the matter. The correct choice highlights this concept.

Tags

NGSS.MS-PS1-4

A gas

• has a definite shape but no definite volume

• has a definite volume but no definite shape

• has fast-moving particles

• none of the above

Answer explanation

The question asks about the properties of a gas. The correct answer is that a gas has fast-moving particles. This is because gases are composed of particles that move quickly and freely, allowing the gas to expand and fill any space available to it. This property distinguishes gases from solids and liquids, which have slower-moving particles and definite shapes or volumes.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4