Physical Science EOC Review

Front

What can be found on the periodic table of elements?

Back

The Number of Protons of an element.

Front

What does it mean for a system to be balanced?

Back

A balanced system has equal forces acting on it, resulting in no net force.

Front

What is a chemical change?

Back

The formation of a new substance with different properties; cannot be undone by physical means.

Front

Are atomic mass and atomic number the same thing?

Back

No, atomic mass is the average mass of an atom, while atomic number is the number of protons in the nucleus.

Front

What do you call two or more physically combined substances?

Back

A mixture.

Front

What is the definition of an element?

Back

A pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a compound?

Back

A substance formed when two or more elements are chemically bonded together.

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 identity, while a chemical change results in a new substance.

Front

What is the role of protons in an atom?

Back

Protons determine the atomic number and identity of an element.

Front

What is an isotope?

Back

Atoms of the same element that have the same number of protons but different numbers of neutrons.