Question 1

What can we infer about matter based on the model that describes it as being made of particles too small to be seen?

Accepted Answer

Matter is made up of tiny particles that are not visible to the naked eye.

Answer

Matter is composed of waves of energy.

Answer

Matter is a solid block without any internal structure.

Answer

Matter is only made up of large particles we can see.

Question 2

Which tool would a scientist most likely use to observe that matter is made up of particles too small to be seen?

Accepted Answer

A microscope.

Answer

A thermometer.

Answer

A barometer.

Answer

A telescope.

Question 3

Which statement best describes the concept of matter based on its particle nature?

Accepted Answer

Matter is composed of tiny, invisible particles that make up everything around us.

Answer

Matter is only found in solid form and does not include liquids or gases.

Answer

Matter consists of particles that are always visible to the eye.

Answer

Matter is made of large visible parts that do not interact.

Question 4

How does the particle model explain why we cannot see individual particles in a glass of water?

Accepted Answer

The particles are extremely small and packed closely together, making them invisible to the naked eye.

Answer

The particles are too transparent and blend into the water.

Answer

The particles move too quickly to be seen at any moment.

Answer

The particles change size and become invisible when in water.

Question 5

What happens to the particles of a substance when it changes from a solid to a liquid?

Accepted Answer

The particles move faster and spread apart as they gain energy.

Answer

The particles become larger and move closer together.

Answer

The particles shrink and stop moving.

Answer

The particles stop moving entirely and clump together tightly.

Question 6

Why can't we see the individual particles that make up the air around us?

Accepted Answer

The particles are too small for our eyes to detect individually.

Answer

Air particles are only visible under bright light.

Answer

Air particles reflect light, making them invisible.

Answer

Air particles do not exist in our atmosphere.

Question 7

What is the most accurate description of how particles behave in a gas compared to a solid?

Accepted Answer

Particles in a gas move freely and are spread far apart, while in a solid they are tightly packed and vibrate in place.

Answer

Particles in a gas do not move at all, while in a solid they move quickly.

Answer

Particles in a gas are stationary, while in a solid they bounce constantly.

Answer

Particles in a gas are tightly packed and vibrate, while in a solid they move freely.

Question 8

How does the particle model explain the expansion of a metal rod when heated?

Accepted Answer

The particles move more vigorously and spread slightly further apart, causing expansion.

Answer

The particles combine and form larger particles, increasing the size.

Answer

The particles stop moving, allowing them to expand.

Answer

The particles gain mass and become heavier, causing expansion.

Question 9

Why does a balloon shrink when placed in a freezer, according to the particle model of matter?

Accepted Answer

The particles slow down and move closer together as they lose energy.

Answer

The particles stop existing at cold temperatures.

Answer

The particles move faster and spread out further.

Answer

The particles increase in size and take up less space.

Question 10

What effect does heating have on the particles of a liquid, according to the particle model?

Accepted Answer

The particles move faster and spread apart, increasing the liquid's volume.

Answer

The particles shrink and decrease in size, making the liquid denser.

Answer

The particles slow down and move closer together, reducing the liquid's volume.

Answer

The particles stop moving entirely, causing the liquid to solidify.

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