Chemistry Review

Front

What is atomic mass?

Back

Atomic mass is the weighted average mass of an atom's isotopes, measured in atomic mass units (amu). It reflects the number of protons and neutrons in the nucleus.

Front

Where are protons and neutrons found in an atom?

Back

Protons and neutrons are found in the nucleus of an atom.

Front

What is the basic unit of matter?

Back

The basic unit of matter is the atom.

Front

How many electrons does a Boron atom contain?

Back

A Boron atom contains 5 electrons.

Front

What charge does an electron have?

Back

An electron has a negative charge.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons.

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

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 charge of a proton?

Back

A proton has a positive charge.