Reactivity
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Is making ice cubes a chemical or physical change
physical
What type of change is reversible
Physical change
Metal rusting is what kind of change
Chemical change
What type of change results in the formation of a new substance
Chemical change
in a chemical change the atoms _______
Are rearranged
What indicates there has been a chemical reaction
colour change/bubbling/fizzing
If you react magnesium with oxygen what do you end up with
Magnesium oxide
What is another name for burning
combustion
For iron to rust what reactants do you need
iron, oxygen and water
What can we use to protect a metal from corrosion
paint
What gas is needed to create an oxide
oxygen
When metals react with acids what gas is made
hydrogen
What salt is made with nitric acid
nitrate
What is the test for hydrogen
lit splint goes pop
Which metal is most reactive sodium, magnesium or copper
Sodium
Magnesium + Hydrochloric acid —–>Hydrogen+
Magnesium chloride
What is the name of a salt made from sulfuric acid?
sulfate
What is the name of a salt made from Hydrochloric acid
chloride
What gas is produced when metals react with water
Hydrogen
Is neutralisation a physical or chemical change
chemical
Why are electrolysis used to extract some metals
They are more reactive then carbon
Some metals can be extracted using carbon why?
The metal is less reactive then carbon and is displaced
What is formed when copper oxide reacts with carbon
copper + carbon dioxide