Atomic theory

Front

What did John Dalton state?

Back

Elements are made of atoms, atoms of a given element are identical, atoms cannot be subdivided, created, nor destroyed.

Front

How many electrons can the first energy level hold?

Back

2

Front

In the diagram shown above, the electrons are Green, Red, Yellow

Back

Yellow

Front

In the diagram shown above, the green particle has:

Back

A mass of 1 amu and a charge of 0

Front

What happens if too many or too few neutrons are added to the nucleus?

Back

The atom becomes more unstable.

Front

What period does this element belong on?

Back

period 2

Front

Determine the charge of an ion with 5 protons, 5 neutrons, and 4 electrons.

Back

+1

Front

What is the atomic number of this atom? Options: 3, 4, 5, 6

Back

3

Front

Which of the following is not found on the periodic table?

• atomic number
• element symbol
• atomic mass
• charge of ion

Back

charge of ion

Front

Which subatomic particles contribute the most to the mass of an atom? Options: Protons, Neutrons, Electrons, Protons only, Protons and Electrons, Protons and Neutrons

Back

Protons and Neutrons