Atoms and Subatomic Particles

Front

Atoms are electronically neutral because they have an equal number of protons and _______________.

Back

electrons.

Front

The three subatomic particles are ____?

Back

protons, neutrons, and electrons.

Front

The ____________ identifies the atom.

Back

proton

Front

How many electrons does the 1st, 2nd and 3rd energy level hold?

Back

1st level = 2 electrons, 2nd level = 8 electrons, 3rd level = 18 electrons.

Front

The electron energy ________ as you move away from the nucleus.

Back

increases

Front

Match each part of the atom with its identity.

Back

A = Energy level (electron cloud), B = Neutron, C = Electron, D = Proton, E = Nucleus.

Front

The atomic number is equal to the number of ________ in the atom.

Back

protons

Front

Charge of a proton

Back

Positive

Front

Charge of a neutron

Back

Neutral

Front

Charge of an electron

Back

Negative