Who created the periodic table?

• Dimitri Mendeleev

• Isaac Newton

• Albert Einstein

• Marie Curie

Which is the first element in the periodic table?

• Hydrogen

• Helium

• Nitrogen

• Argon

What state is the metal mercury at room temperature?

• Liquid

• Solid

• Gas

• Plasma

How many atoms are there in a molecule of carbon dioxide (CO₂)?

• 1

• 2

• 3

• 4

What is the chemical symbol for gold?

• Au

• Ag

• G

• Go

What happens to a piece of magnesium if you burn it?

• Its mass increases

• Its mass decreases

• Its mass stays the same

• It turns blue

What is the chemical symbol for iron?

• Ir

• I

• Fe

• F

On which side of the periodic table would you find the non-metals?

• Top left

• Top right

• Bottom left

• Bottom right

Which element has the symbol 'Na'?

• Sodium

• Potassium

• Lithium

• Calcium

Chlorine is a yellow coloured gas. What is the chemical symbol for chlorine?

• C

• Ch

• Cl

• Cn