Atoms, Ions, and Isotopes Review

Front

What is an ATOM?

Back

An atom is the smallest unit of matter that retains the properties of an element. It consists of a nucleus containing protons and neutrons, surrounded by electrons.

Front

What is an ION?

Back

An ion is an atom or molecule that has gained or lost one or more electrons, resulting in a net electrical charge.

Front

What is the difference between an ATOM and an ION?

Back

The difference is in the number of electrons: an atom has a neutral charge, while an ion has a positive or negative charge due to the loss or gain of electrons.

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 the ATOMIC NUMBER of Oxygen (O)?

Back

The atomic number of Oxygen is 8.

Front

What particles are found in the nucleus of an atom?

Back

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

Front

What is the charge of an ion with 5 protons and 3 electrons?

Back

The charge of the ion is +2, because it has more protons than electrons.

Front

How do you determine the charge of an ion?

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The charge of an ion is determined by subtracting the number of electrons from the number of protons: Charge = Protons - Electrons.

Front

What is a NEUTRON?

Back

A neutron is a subatomic particle found in the nucleus of an atom, with no electrical charge.

Front

What is a PROTON?

Back

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