2.02 Physical vs Chemical Changes (BrainPop "Property Changes")

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

• Water freezing into ice.

• A piece of wood burning.

• A toy car rusting.

• Zinc producing hydrogen gas when mixed with water.

What type of change has occurred when a nail rusts?

• A physical change

• A chemical change

• An atomic change

• A reactive change

Tags

NGSS.MS-PS1-2

What does it mean when there is a physical change?

• Matter has changed from one substance into another.

• Matter has changed on the molecular level.

• A new substance has been formed.

• Matter has changed size, shape or form.

What is an example of a chemical change that happens inside your body?

• Food being broken down by enzymes in your stomach

• Food being broken into small pieces by your teeth

• Food being moved from your esophagus into your stomach

• Water being absorbed inside your large intestine

Tags

NGSS.MS-LS1-7

What is an example of a physical change that happens inside your body?

• Food being broken down by enzymes in your stomach

• Food being broken into small pieces by your teeth

• Food being moved from your esophagus into your stomach

• Water being absorbed inside your large intestine

What can you infer about the changes that formed the Grand Canyon?

• They were molecular changes

• They were chemical changes

• They were physical changes

• They were changes in weather

Tags

NGSS.MS-ESS2-2

How does rust form?

• Through paint flaking off of a metal surface

• Through a chemical reaction between iron and oxygen

• Through weathering

• Through the physical mixing of iron and water

Tags

NGSS.MS-PS1-2

What happens when sodium undergoes a chemical reaction with chlorine?

• The two substances form a heterogeneous mixture

• The two substances form a homogenous mixture

• A new compound is formed — salt

• The two substances undergo various physical changes

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Which term best describes the two substances that react to form salt?

• Delicious

• Nutritious

• Edible

• Toxic

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

Which phrase most accurately describes a chemical change?

• A change on the molecular level

• A change in appearance

• A change in taste

• A change in form

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5