Physical Science Review

Front

What is the mass and charge of an electron?

Back

The mass of an electron is 1/1836 that of a proton, and it has a negative charge.

Front

What two measurements are needed to find the density of a liquid?

Back

Mass and volume are needed to find the density of a liquid.

Front

Where is most of an atom's mass located?

Back

Most of an atom's mass is located in the nucleus.

Front

How would you describe the physical state of a rock?

Back

A rock has a definite shape and definite volume.

Front

What indicates a chemical change in a reaction?

Back

A change of chemical composition indicates a chemical change.

Front

What is the definition of density?

Back

Density is the mass of an object divided by its volume.

Front

What are protons and where are they located?

Back

Protons are positively charged particles located in the nucleus of an atom.

Front

What is the role of neutrons in an atom?

Back

Neutrons are neutral particles that contribute to the mass of an atom and are found in the nucleus.

Front

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

Back

A physical change alters the form of a substance but not its chemical composition, while a chemical change results in the formation of new substances.

Front

What is the formula for calculating density?

Back

Density = Mass / Volume.