M & C Atoms and Periodic Table Review

Vertical columns of elements

• Groups

• Periods

Horizontal rows of elements

• Groups

• Periods

The periodic table is arranged by increasing ______ ______, which is equal to the number of protons.

• atomic mass

• atomic number

The elements in yellow are

• metals

• non-metals

• metalloids

The elements in blue are

• metals

• non-metals

• metalloids

The elements in green are

• metals

• non-metals

• metalloids

In an element box, the number at top is the

• atomic number

• atomic name

• atomic mass

• atomic symbol

The number of neutrons in an atom can be found by

• protons + neutrons

• mass + protons

• mass-protons

___________________ are positively charged particles located in the nucleus of an atom.

• Electrons

• Neutrons

• Protons

• Isotopes

The nucleus of an atom is located in its

• electron cloud

• center

• proton

• backpack