Final Unit 1 Atomic Theory Review

Front

Who proposed that electrons move around the nucleus in specific paths at a fixed distance from the nucleus?

Back

Bohr

Front

What is the mass number of an atom with 10 protons, 15 neutrons, and 10 electrons?

Back

25

Front

How many neutrons are in Bromine-80?

Back

45

Front

An element with a mass number of 11 and an atomic number of 5 has how many neutrons?

Back

6

Front

Which atomic model was created after the discovery of the nucleus?

Back

Rutherford's model

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

Define mass number.

Back

The total number of protons and neutrons in an atom's nucleus.

Front

What is the charge of an electron?

Back

Negative.

Front

What is the charge of a proton?

Back

Positive.

Front

What is the charge of a neutron?

Back

Neutral.