Front

What is an ion?

Back

An ion is an atom that has a net electric charge due to the loss or gain of one or more electrons.

Front

What charge do protons carry?

Back

Protons carry a positive charge.

Front

What is the charge of electrons?

Back

Electrons carry a negative charge.

Front

How many protons are in a neutral beryllium (Be) atom?

Back

A neutral beryllium atom has 4 protons.

Front

What is the atomic mass of oxygen?

Back

The atomic mass of most oxygen atoms is approximately 16 atomic mass units (amu).

Front

What is the relationship between protons and electrons in a neutral atom?

Back

In a neutral atom, the number of protons equals the number of electrons.

Front

What is the role of neutrons in an atom?

Back

Neutrons contribute to the mass of an atom and help stabilize the nucleus, but they do not carry any charge.

Front

How do you determine the number of neutrons in an atom?

Back

The number of neutrons can be determined by subtracting the number of protons from the atomic mass.

Front

What is the significance of the atomic number?

Back

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

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.