Physical Final

Front

Which choice describes the Law of Conservation of Matter BEST? Options: a process by which atoms of one or more substances are rearranged, mass is never created nor destroyed, the amount of time it takes for half of a sample to break down, the measure of kinetic and potential energy

Back

mass is never created nor destroyed

Front

TRUE or FALSE: Most of the atoms that are present at the start of a chemical reaction are present at the end.

Back

False

Front

What is a chemical reaction?

Back

a process by which atoms of one or more substances are rearranged

Front

Which of the following is NOT a property of an acid? Sour taste, pH is lower than 7, Turns red with blue litmus paper

Back

Does not conduct electricity

Front

When an object gets cold, what happens to the particles?

Back

The particles start to slow down.

Front

When an object gets hotter, what happens to the particles?

Back

The particles start to speed up.

Front

What is force?

Back

a push or pull

Front

Pushing an object across a hardwood floor is easier than a carpet because you have to overcome more what on a carpet?

Back

friction

Front

_______________ is the amount of time it takes for half of a sample of a radioisotope to break down.

Back

Half-life

Front

___________ is the amount of heat required to raise the temperature of one gram of an object by one degree.

Back

Specific heat