Atoms cannot be __________ apart

All matter is made of atoms

This is a colorless and odorless gas, but glows blue-green and an electrical discharge tube

The nucleus is in the _______ of the atom.

There are _______ atoms are in every living thing

If we break matter down enough it is made of _______ things

The atomic number represents the number of ________ in an atom.

Different atoms have different numbers of protons.

It is said that _______ in the universe is made of either matter or energy

What is the symbol of gold

What is the symbol for argon.

If we break matter down enough it is made of _______ things.

Elements are arranged in _______ number order on the periodic table.

To smash an atom and separate the neutrons you must aim an electron at the nucleus and _________ it really fast.

A scientist can separate water into hydrogen and oxygen gas by running electricity through it.

This is one of the gases used in barcode laser scanners. It is an odorless, collarless and inert gas.

When was gold discovered

When was sodium discovered

when was argon discovered