Atoms elements compounds and mixtures

Something which contains only one type of atom is called

• A compound

• An element

• A mixture

Something which contains more than one type of element chemically joined is called

• A compound

• An element

• A mixture

Something which contains more than one type of atom not chemically joined is called

• A compound

• An element

• A mixture

Elements are arranged in the periodic table. We write the chemical symbol for sodium like this:

• NA

• Na

• na

• nA

How many elements are in CaO

• 1

• 2

• 3

• 4

Which two elements are in carbon dioxide (CO2)

• Carbon and Hydrogen

• Calcium and Oxygen

• Carbon and Oxygen

• Hydrogen and Oxygen

An atom is made up of 3 smaller particles called

• Protons, neutrals and electricity

• Protons, neutrons and electrons

• Protein, neutral and elephant

What is the charge on an electron?

• Neutral

• Positive

• Negative

The atomic (little) number of an elements tells us the number of

• Protons

• Neutrons

• Protons and neutrons

The atomic mass (big) number of an elements tells us the number of

• protons

• neutrons

• protons and neutrons