Two categories of polymers are...

• Natural and synthentic
• Man made and synthetic
• Hard and soft
• Strong and weak

These are properties of ceramics...

• Strong, reactive and malleable 
• Strong, brittle and unreactive
• Weak, brittle and unreactive
• Weak, reactive and malleable

Most metals are found in compounds in rocks called....

• Mixtures
• Compounds
• Ores
• Carbonates

Copper would displace oxygen from lead oxide

• true
• false

magnesium would displace oxygen from zinc oxide

• True
• False

When a more reactive metal takes the place of a less reactive metal in a compound...

• oxidation
• reduction
• displacement
• acidity

Dissolving barium in water would produce what...?

• barium
• barium oxide
• barium hydroxide 
• barium sulfide

Metal and water word equation...

• metal + water --> metal oxide + oxygen
• metal + water --> metal hydroxide + hydrogen
• metal + water --> metal hydride + hydroge
• metal + water --> carbon dioxide + water

Three alkali metals are...

• calcium, magesium, barium
• lithium, sodium, potassium
• gold, silver, platinum
• aluminium, cobalt, nickel

What is produced when calcium is burned in air?

• hydrogen
• carbon dioxide 
• calcium oxide
• calcium hydroxide