Chapter 3 Review

Which Alkali Metal has the most amount of protons?

• Cesium

• Francium

• Phosphorous

• Rubidium

Which Element would have the lowest Atomic Number?

• A

• B

• C

• D

Has the highest penetrating power. Can penetrate our body. Even several cm thick of lead or several meters thick of concrete cannot stop all of it.

• Alpha

• Beta

• Gamma

What is the atomic number of this atom?

• 2

• 4

• 6

• 8

Because of its ability to penetrate materials, which of the following is the most dangerous radiation?

• Alpha

• Beta

• Gamma

• X-Rays

__________________is the time it takes for half of the radioactive atoms in an element to decay.

• Half-life

• Dating range

• Radioactive isotope

• Radioactive decay

Metals tend to be

• good conductors

• gases

• dull

• brittle

Electrons can be found in

• The proton

• The nucleus

• The electron cloud

• The neutron

Each column of the periodic table is

• a group

• an element

• a period

• an isotope

The scientist responsible for "discovering" the nucleus is:

• Bohr

• Rutherford

• Thomson

• Dalton