Chemistry 1-2 Mastery Test

Front

What is an electron?

Back

An electron is a subatomic particle that has a negative charge and much less mass than a proton.

Front

What do we call two or more atoms bonded together?

Back

A molecule.

Front

How are elements classified in the Periodic Table?

Back

Elements are classified according to their atomic number.

Front

How many neutrons are in an atom of Oxygen?

Back

8 neutrons.

Front

What is the term for the substances formed as a result of a chemical reaction?

Back

Products.

Front

What is a proton?

Back

A proton is a positively charged subatomic particle found in the nucleus of an atom.

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is a chemical reaction?

Back

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.