# 5th Grade Science : Particle Size

## Example Questions

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### Example Question #1 : Particle Size

Which of these is the best models that matter is made of tiny particles?

Explanation:

Matter is anything that takes up space. Matter is in the form of solid, liquid, or gas. Solids, liquids, and gases are made of tiny particles called atoms and molecules. In a solid, the particles are very attracted to each other. They are close together and vibrate in position but don’t move past one another. In a liquid, the particles are attracted to each other but not as much as they are in a solid. The particles of a liquid are close together, always moving, and can slide past one another. In a gas, the particles have very little attraction to each other. They are very far apart compared to the particles in a solid or liquid, and are constantly moving. The particles don’t interact with one another but just hit and bounce off of each other when they collide.

### Example Question #2 : Particle Size

Which of these images best represents the type of matter that has particles that are vibrating in place but not moving past each other?

none of these

Explanation:

Matter is anything that takes up space. Matter is in the form of solid, liquid, or gas. Solids, liquids, and gases are made of tiny particles called atoms and molecules. In a solid, the particles are very attracted to each other. They are close together and vibrate in position but don’t move past one another. In a liquid, the particles are attracted to each other but not as much as they are in a solid. The particles of a liquid are close together, always moving, and can slide past one another. In a gas, the particles have very little attraction to each other. They are very far apart compared to the particles in a solid or liquid, and are constantly moving. The particles don’t interact with one another but just hit and bounce off of each other when they collide.

### Example Question #3 : Particle Size

This image shows the particles in a type of matter. Which type of matter is this image probably showing?

solid

liquid

none of these

gas

liquid

Explanation:

The answer is a liquid. They are too close together to be a gas, but not in a specific formation like a solid.

Matter is anything that takes up space. Matter is in the form of solid, liquid, or gas. Solids, liquids, and gases are made of tiny particles called atoms and molecules. In a solid, the particles are very attracted to each other. They are close together and vibrate in position but don’t move past one another. In a liquid, the particles are attracted to each other but not as much as they are in a solid. The particles of a liquid are close together, always moving, and can slide past one another. In a gas, the particles have very little attraction to each other. They are very far apart compared to the particles in a solid or liquid, and are constantly moving. The particles don’t interact with one another but just hit and bounce off of each other when they collide.

### Example Question #1 : Particle Size

Which of these image best represents a solid or the particles in a solid?

none of these

none of these

Explanation:

The answer is none of these

Matter is anything that takes up space. Matter is in the form of solid, liquid, or gas. Solids, liquids, and gases are made of tiny particles called atoms and molecules. In a solid, the particles are very attracted to each other. They are close together and vibrate in position but don’t move past one another. In a liquid, the particles are attracted to each other but not as much as they are in a solid. The particles of a liquid are close together, always moving, and can slide past one another. In a gas, the particles have very little attraction to each other. They are very far apart compared to the particles in a solid or liquid, and are constantly moving. The particles don’t interact with one another but just hit and bounce off of each other when they collide.

### Example Question #5 : Particle Size

Which of these examples of matter are made of tiny particles we cannot see?

all of these

none of these

all of these

Explanation:

Matter is anything that takes up space. Matter is in the form of solid, liquid, or gas. Solids, liquids, and gases are made of tiny particles called atoms and molecules. In a solid, the particles are very attracted to each other. They are close together and vibrate in position but don’t move past one another. In a liquid, the particles are attracted to each other but not as much as they are in a solid. The particles of a liquid are close together, always moving, and can slide past one another. In a gas, the particles have very little attraction to each other. They are very far apart compared to the particles in a solid or liquid, and are constantly moving. The particles don’t interact with one another but just hit and bounce off of each other when they collide.

### Example Question #6 : Particle Size

What answer choice(s) is the benefit of using a scientific model?

Models can be used to generate new questions.

Models can be used as a tool to support thinking.

Models are tools that scientists can use to predict events.

None of the answer choices are correct.

All of the answer choices are correct.

All of the answer choices are correct.

Explanation:

A scientific model can be used a show scientists' understanding of an object, event, or process. Models can be used to generate new questions, used as a tool to support thinking, and models are tools that scientists can use to predict events.

### Example Question #7 : Particle Size

Solids, liquids, and gases are made of tiny particles called ________ and ________.

molecules; atoms

electrons; vibrations

flexibility; neurons

protons; molecules

molecules; atoms

Explanation:

Solids, liquids, and gases are made of tiny particles called atoms and molecules. Atoms and molecules are what make up all matter. They are the smallest particles of any element. They still have the same properties as the element they make up. An atom of aluminum still has the same melting point as an aluminum can. They are so tiny we cannot see their color, but if we zoomed in with a scanning tunneling microscope or electron microscope, we would see they would be the same color.

### Example Question #8 : Particle Size

True or False: In a liquid, the particles are attracted to each other but not as much as they are in a solid. The particles of a liquid are close together, always moving, and can slide past one another.

True

False

True

Explanation:

Matter is anything that takes up space. Matter is in the form of solid, liquid, or gas. Solids, liquids, and gases are made of tiny particles called atoms and molecules. In a solid, the particles are very attracted to each other. They are close together and vibrate in position but don’t move past one another. In a liquid, the particles are attracted to each other but not as much as they are in a solid. The particles of a liquid are close together, always moving, and can slide past one another. In a gas, the particles have very little attraction to each other. They are very far apart compared to the particles in a solid or liquid, and are constantly moving. The particles don’t interact with one another but just hit and bounce off of each other when they collide.

### Example Question #9 : Particle Size

True or False: In a gas, the particles have very little attraction to each other. They are very far apart compared to the particles in a solid or liquid and are constantly moving.

True

False

True

Explanation:

Matter is anything that takes up space. Matter is in the form of solid, liquid, or gas. Solids, liquids, and gases are made of tiny particles called atoms and molecules. In a solid, the particles are very attracted to each other. They are close together and vibrate in position but don’t move past one another. In a liquid, the particles are attracted to each other but not as much as they are in a solid. The particles of a liquid are close together, always moving, and can slide past one another. In a gas, the particles have very little attraction to each other. They are very far apart compared to the particles in a solid or liquid and are constantly moving. The particles don’t interact with one another but just hit and bounce off of each other when they collide.

### Example Question #10 : Particle Size

What is the name of the scientific theory that recognizes that all matter is made of up parts that are too small to be seen without magnification?

Quantum Theory

Atomic Theory

Law of Thermodynamics

Newton's 3rd Law of Motion