What is the symbol for hydrogen gas?

• H
• Hy
• h
• HY

The atomic mass of lithium is 7 and the atomic number of lithium is 3. How many protons does lithium have?

• 7
• 3
• 4
• 10

The atomic mass of lithium is 7 and the atomic number of lithium is 3. How many neutrons does lithium have?

• 7
• 3
• 4
• 10

The atomic mass of lithium is 7 and the atomic number of lithium is 3. How many electrons does lithium have?

• 7
• 3
• 4
• 10

Which of the following is NOT a subatomic particle?

• Proton
• Nucleus
• Neutron
• Electron

What are the rows of the Periodic Table called?

• Periods
• Groups

What are the columns of the Periodic Table called?

• Periods
• Groups

How are the elements in the Periodic Table organised?

• By increasing atomic mass
• By decreasing atomic mass
• By increasing atomic number
• By decreasing atomic number

The reactivity of metals increases moving down a group.

• True
• False

The reactivity of non-metals increased moving down a group

• True
• False