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METALS/non metals
discussion
Question | Answer |
---|---|
what are metals? | hard, dense shiny, high melting points |
good or bad conductors of heat and electricity | good |
what does malleable imply? | hammered into different shapes |
whart word describes metals that can be stretched into wire? | ductile |
describe non metals | generally the opposite properties to metals |
describe an alloy | a mixture of 2 or more metals |
name 3 alloys | brass. bronze. steel |
list conditions needed for corrosion | water, oxygen |
list 3 ways of preventing corrosion | painting, greasing, galvanising |
give an example of where brass, bronze, stainless steel is used | instruments,medals, cutlery |
list metals in reactivity series | calcium, magnesium, zinc, copper |
what gas is given off when they are put in hcl? | hydrogen |