Physical Science Semester 1 Review

Front

2200 m = ________ km

Back

2.2

Front

When a chemical change occurs, atoms in the original substance are:

Back

rearranged to make new substances

Front

Elements found touching the stairstep line are:

Back

metalloids

Front

The random molecular motion of a substance is greatest when the substance is:

Back

a gas

Front

To identify a substance by its density, you must determine its:

Back

mass and volume

Front

What is the definition of a chemical change?

Back

A process where substances combine or break apart to form new substances.

Front

What is the definition of density?

Back

Density is the mass of a substance divided by its volume.

Front

What are metalloids?

Back

Elements that have properties of both metals and nonmetals.

Front

What happens to the motion of molecules as temperature increases?

Back

Molecular motion increases as temperature increases.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume