Atoms and the Periodic Table

Front

The positive particle in an atom.

Back

proton

Front

Who proposed the atomic theory?

Back

Dalton

Front

How many protons does Nitrogen have?

Back

7

Front

Which of the labeled structures is a neutron? Options: a, b, c

Back

b

Front

What is the mass number of this element?

Back

14

Front

Which of the labeled structures is an electron? Options: a, b, c

Back

a

Front

If an element has an atomic number of 11 and a mass number of 23, how many neutrons does it have?

Back

12

Front

The neutral particle in an atom.

Back

neutron

Front

Which particle is NOT found in an atom's nucleus? Options: proton, neutron, electron

Back

electron

Front

All matter is made of what?

Back

atoms