Atomic Theory

Front

What is the atomic number?

Back

the number of protons in the nucleus

Front

What is the mass number?

Back

the number of protons and neutrons in the nucleus

Front

What is the atomic number of this atom? Options: 1, 3, 4, 7

Back

3

Front

How is the number of neutrons in the nucleus of an atom calculated?

Back

Subtract the number of p+ from the mass number

Front

What subatomic particles would you find in the nucleus of an atom?

Back

Protons and Neutrons

Front

If an atom has 12 positively charged subatomic particles, what must it also have to be considered a neutral atom?

Back

12 electrons

Front

An atom has 10 protons, 15 neutrons and 10 electrons. What is its mass number?

Back

25

Front

What is the atomic number of the atom pictured? Options: 9, 8, 18, 19

Back

9

Front

What determines the identity of an element? Options: number of protons, number of neutrons, atomic mass, number of shells.

Back

number of protons

Front

Elements which are shiny, conduct electricity and heat are called

Back

metal