Atoms of different elements have different...

Arranging elements in order of their proton numbers is called...

What early attempts to link elements together were dismissed by the scientific community?

What did Mendeleev's Periodic Table enable him to do?

What is a group on the periodic table?

How can you use a Periodic Table to classify if an element is a metal or a non-metal?

What are the chemical symbols for Group 1 metals?

What happens when alkali metals are cut?

Describe the reactions of lithium, sodium and potassium with water

What are compounds of alkali metals with chlorine called?

What's the pattern of Group 1 alkali metals as you go down the group?

What are the precautions necessary for working with Group 1 metals?

What are the chemical symbols for Group 7 halogens?

What are the states of Group 7 halogens at room temperature?

What do halogen molecules consist of?

What happens in displacement reactions?

What precautions need to be taken when dealing with Group 7 halogens?

What's the formulae for hydrogen, water and halogen?

Chlorides, bromides and iodides for lithium, sodium and potassium

Write balanced symbol equation for sodium and water

What's the structure of an atom?

What's the relative masses and charges of protons, neutrons and electrons?