Periodic Table Review

How many periods are in the periodic table?

• 18

• 13

• 7

• 22

The atomic number is the number of ___ in the atom's nucleus.

• electrons

• neutrons

• protons

• electrons, protons, and neutrons

The horizontal rows in the periodic table are called __.

• shells

• layers

• regions

• periods

Elements in the periodic table are listed in order of their ___.

• number of electrons

• density

• atomic number

• discovery

What is the symbol for copper?

• Co

• Cu

• Ag

• CU

A group also be called a family.

• True

• False

Elements are substances that can be broken down into simple substances.

• True

• False

The periodic table is useful for predicting properties of elements.

• True

• False

Elements in the same periods share similar properties.

• True

• False

The number found below the chemical name is the ___.

• number of protons

• atomic number

• atomic mass

• number of electrons