Flashcards in Patterns of Reactivity Deck (18):
What might make sodium metal expensive?
it takes a lot of heat and electricity to extract sodium from sodium chloride .
what’s the product of metal and oxygen?
what happens when you burn copper?
copper turns black
what happens when you burn iron?
produce orange sparks
what happens when you burn magnesium?
emits bright white light
how do alkaline metal react with water?
gives off gas
moves across water
group 1 reaction word equation?
metal + water = metal hydroxide + hydrogen
word equation for metal and acid?
metal + acid = salt + hydrogen
which metals are explosive in acid?
Potassium , Sodium and Lithium
list metals in reactivity
why is aluminium not very reactive?
it has an oxide layer
why build ships out of steel?
it is strong and cheap
what does rust do to steel?
make it flaky and weak
what is silica gel used for?
to absorb moisture
word equation for rust?
iron + water + oxygen = hydrated iron (iii) oxide
how do we prevent rust on ship?
what is stainless steel and does it rust?
steel and chromium and it doesn’t rust