Comprehensive Phy. Science Review

Front

What happens to the particles of matter when the temperature increases?

Back

The particles speed up and move farther apart.

Front

What is the pH of a solution that is considered acidic?

Back

A solution with a pH of less than 7 is considered acidic.

Front

What is a sign that a chemical reaction has occurred?

Back

Formation of a gas is a sign that a chemical reaction has occurred.

Front

What two simple machines can a pair of scissors be classified as?

Back

A pair of scissors can be classified as a lever and a wedge.

Front

What type of bond is formed when two atoms share electrons?

Back

Covalent Bond.

Front

What is the definition of a chemical reaction?

Back

A process where substances (reactants) transform into different substances (products).

Front

What is an example of an inclined plane?

Back

A ramp is an example of an inclined plane.

Front

What is the difference between an acid and a base?

Back

Acids have a pH less than 7, while bases have a pH greater than 7.

Front

What is the law of conservation of mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is an example of a physical change?

Back

Melting ice is an example of a physical change.