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What is the smallest piece of matter that still has properties of that matter?

• element

• atom

• proton

Negatively charged particle

• proton

• neutron

• electron

Neutral charge particle

• proton

• neutron

• electron

Atomic weight

• number of protons and neutrons inside the nucleus

• number or electrons or protons

• number of protons, neutrons and electrons

Positively charge particle

• proton

• neutron

• electron

Atomic number is

• Number of protons or electrons

• Number of protons and neutrons

• Your phone number

What does the K stand for in the Potassium block?

• Atomic number

• Atomic weight

• Symbol for the atom

What part of an atom has a positive charge?

• protons

• electrons

• neutrons

• atoms

How many elements are there in the world?

• 116

• infinite

• 250

• 100

A substance that cannot be broken down into anything simpler is _____________________.

• an element

• a compound

• atoms

• matter