Atoms & Elements Test Review

Elements that are shiny & conduct heat & electricity well

Hydrogen

Number of protons in an atom

Vertical columns on the periodic table

Mercury

What is blue?

A negatively charged particle in an atom

Can be solid, liquid, or gas at room temperature

Most are solid at room temperature

Period of aluminum (Al)

Group of aluminum (Al)

Smallest part of an element that still has the chemical properties of that element

Horizontal rows on the periodic table

Elements found on the right side of the periodic table

Elements that are dull & don't conduct heat & electricity

Elements that are semiconductors

A positively charged particle in an atom

Atomic mass of aluminum (Al)

A substance that can't be broken down into a simpler substance by ordinary chemical changes

A particle that has no charge

The man who published the 1st periodic table & predicted the properties of missing elements

What 2 subatomic particles can you find inside the red circle?

1-2 letters used to represent an atom

# of neutrons of aluminum (Al)

Helium

# of electrons of aluminum (Al)

# of protons of aluminum (Al)

Atomic # of aluminum (Al)

What does the red represent?

Silicon

A table that organizes elements based on chemical & physical properties

Elements found on the left side of the periodic table

Average weight of an element

Center of an atom