MSC Grid 3AS Test

Front

What part of the atom did Rutherford discover?

Back

Nucleus

Front

What is the correct chronological order of the Atomic Theory Timeline?

Back

Democritus, Dalton, Thomson, Rutherford, Bohr

Front

Isotopes are atoms of the same element with different numbers of __________ and therefore different __________.

Back

n0 ; atomic masses

Front

If the number of electrons in a neutral atom changes, what do you create?

Back

Ion

Front

Where is most of the mass in an atom located?

Back

In the nucleus

Front

What is the charge of a proton?

Back

Positive (+)

Front

What is the charge of an electron?

Back

Negative (-)

Front

What is the charge of a neutron?

Back

Neutral (0)

Front

What is the atomic number of an element?

Back

The number of protons in the nucleus of an atom.

Front

What is the mass number of an atom?

Back

The total number of protons and neutrons in the nucleus.