Properties and Changes of Matter Explained

What should you do if you miss any part of the video?

• Ask a friend for notes

• Pause and rewind the video

• Skip to the next section

• Wait until the next class

Why is bamboo considered an ideal material for manufacturing chopsticks?

• It has a pleasant odor

• It is soft like Charmin

• It is very expensive

• It is heat resistant and splits easily

Which of the following is NOT a physical property?

• Density

• Texture

• Color

• Flammability

What happens to the chemical composition of iron when it melts?

• It loses its properties

• It changes completely

• It remains the same

• It becomes a different element

What is a chemical property of iron?

• Its ability to rust

• Its density

• Its melting point

• Its color

What is the green coating on the Statue of Liberty an example of?

• Physical change

• Phase change

• Chemical property

• Physical property

Tags

NGSS.MS-PS1-2

What defines a physical change?

• A change in appearance or form

• A change in chemical composition

• A change that cannot be reversed

• A change that creates a new substance

Which of the following is an example of a physical change?

• Dissolving salt in water

• Rusting iron

• Burning paper

• Cooking an egg

What is required for a chemical change to occur?

• A chemical reaction

• A physical reaction

• A change in state

• A change in temperature

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which of the following changes cannot be undone by physical means?

• Melting ice

• Cutting paper

• Burning wood

• Dissolving sugar

Tags

NGSS.MS-PS1-5