metals Flashcards
what are the properties of metals
conduct heat, conduct electricity, high melting and boiling point, strong, hard, malleable
what are the uses of metals
make saucepans, make electric wiring , make jewellery,
how do metals react with water
metals react with water to produce a metal hydroxide and hydrogen
eg. sodium + water»_space;»> sodium hydroxide + hydrogen
when does iron rust
iron rusts when it comes into contact with water and oxygen
what is the word equation for rusting
iron + oxygen + water»_space;» hydrated iron (III) oxide
how may the rusting of iron be prevented
by using grease, oil , paint , plastic
what is the word equation for metals reacting with acid
metal + acid»_space;» salt + hydrogen
give examples of a word equations of reactions of acids and metals
zinc + sulphuric acid»_space;»> zinc sulphate + hydrogen
magnesium + hydrochloric acid»_space;»> magnesium chloride + hydrogen
what is the test for hydrogen
To light a wooden splint splint and put in in a test tube if there is a pop hydrogen was produced. This is because the flame ignites the hydrogen, which burns explosively to make a loud sound
what are alloys
allows are mixtures of metals
what is steel a mixture off
iron and carbon
which metals react with oxygen very quickly w
potassium , sodium , lithium
Calcium and magnesium are slightly less reactive with oxygen
which metals react with oxygen very slowly
copper magnesium
what is the word equation for copper + sulphur + oxygen
copper + sulphur + oxygen»_space;»»> copper sulphATE
what is the word equation for copper + sulphur
copper + sulphur»_space;» copper sulphIDE
