1.03 Atomic Theory & Mass Review

Front

What are the building blocks of matter?

Back

Atoms

Front

What unique number does each element have?

Back

Protons

Front

What did Rutherford's experiments conclude about atomic structure?

Back

The nucleus is small, dense, and positively charged; most of the atom is empty space.

Front

What negatively charged particles did Thomson discover?

Back

Electrons

Front

Which atomic model is described as similar to a chocolate chip cookie?

Back

Thomson's model.

Front

What is the charge of protons?

Back

Positive

Front

What is the charge of electrons?

Back

Negative

Front

What is the nucleus of an atom composed of?

Back

Protons and neutrons.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.

Front

What is the difference between atomic number and mass number?

Back

Atomic number is the number of protons, while mass number is the total number of protons and neutrons.