Periodic Table

The periodic table is composed of elements in ________________________________

• decreasing atomic number
• increasing atomic mass
• increasing atomic number
• decreasing atomic mass

The horizontal row on the periodic table are called

• periods
• groups
• elements
• atomic numbers

Columns on the periodic table are called

• periods
• groups
• elements
• atomic numbers

Elements in the same group have ____________________

• different properties
• different colors
• similar properties
• similar sizes

Valence electrons are located _______________________

• inside the nucleus next to the protons
• inside the nucleus next to the neutrons
• in the innermost electron shell
• in the outermost electron shell

What type of element is A

• metal
• nonmetal
• metalloid

What type of element is B

• metal
• nonmetal
• metalloid

What type of element is C

• metal
• nonmetal
• metalloid

What element is located in group 2 perioid 7?

What element is located in group 5 perioid 5?