Atomic Structure

Front

Subatomic particles with a negative charge

Back

Electrons

Front

Subatomic particles with a positive charge

Back

protons

Front

Subatomic particles that are neutral in charge

Back

Neutrons

Front

Look at this picture of Argon off the periodic table. Which of the following is true for this element?

18 protons

,

40 protons

,

22 protons

,

21.9 protons

Back

18 protons

Front

Which part of an atom is used to identify it?

Back

number of protons

Front

The atomic mass of an atom is equal to

Back

number of protons plus number of neutrons

Front

The nucleus of an atom is made of

Back

protons and neutrons

Front

Outside the nucleus of an atom are these: protons, neutrons, quarks, electrons

Back

electrons

Front

The mass of this particle is so small that it is not counted.

Back

electron

Front

The charge of the nucleus of all atoms or ions

Back

positive