Semester 1 Test Grade 7

Front

What happens when you combine citric acid, baking soda, and water?

Back

The molecules rearrange into new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What organ does dialysis tubing model when testing for food molecules?

Back

Small intestine.

Front

What is the law of conservation of matter?

Back

Matter cannot be created or destroyed.

Tags

NGSS.MS-PS1-5

Front

What does the speed of molecules determine?

Back

Temperature.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Front

What is the definition of interaction?

Back

Connection or relationship between two things.

Tags

NGSS.MS-LS2-2

Front

What is an example of a chemical change?

Back

Combining vinegar and baking soda to produce carbon dioxide.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is diffusion?

Back

The movement of molecules from an area of higher concentration to an area of lower concentration.

Front

What is osmosis?

Back

The diffusion of water across a selectively permeable membrane.

Front

What is a hypothesis?

Back

A testable prediction about the outcome of an experiment.

Front

What is the difference between a physical change and a chemical change?

Back

A physical change alters the form of a substance, while a chemical change alters its chemical composition.

Tags

NGSS.MS-PS1-2