Electrons have a relative mass of…

• 1

• 0

• 2

• very small

What happens to the boiling points and melting points of Group 7 elements as you go down the group?

• They decrease

• They stay the same

• They increase

• They decrease and then level off

Atoms are made from…

• electrons

• protons

• neutrons

• protons, neutrons and electrons

In the plum pudding model, where were the electrons located?

• In the middle

• Around the outside

• Embedded throughout

• In shells

The overall charge of an atom is 0 because…

• the number of protons and the number of neutrons are the same

• the number of neutrons and the number of electrons are the same

• the number of electrons and the number of protons are the same

• there is no charge on a proton

When you describe a chemical reaction using a word equation you show the…

• reactants

• reactants and products

• products

• symbols

Protons have a relative mass of…

• 1

• 0

• 2

• very small

How would you describe the reactivity of Group 1 metals?

• Very reactive

• Slightly reactive

• Not very reactive

• Unreactive

How are elements in the modern periodic table arranged?

• In order of atomic mass

• In order of atomic number

• In alphabetical order

• By number of neutrons

Later experiments proved that particles in the nucleus had a positive charge. These were named as…

• protons

• neutrons

• electrons

• atoms