Chemistry Review

Front

What type of change is ice melting?

Back

Physical Change

Tags

NGSS.MS-PS1-4

Front

In a ______________, one substance is dissolved in another substance.

Back

solution

Front

What type of change is ice cream melting?

Back

Physical Change

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Front

How many atoms of oxygen are in 3Fe₂O₃?

Back

9

Tags

NGSS.MS-PS1-1

Front

What is a physical change?

Back

When a change occurs but it does not result in the formation of a new substance.

Tags

NGSS.MS-PS1-4

Front

What is a chemical change?

Back

When two chemicals react with one another to form a new substance.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

Front

What is a solution?

Back

A homogeneous mixture where one substance is dissolved in another.

Front

What is a suspension?

Back

A heterogeneous mixture where particles are dispersed but not dissolved.

Front

What is a colloid?

Back

A mixture where tiny particles are evenly distributed but not dissolved.

Front

What happens to the molecules in a physical change?

Back

The molecules rearrange but do not change their chemical structure.