Reactivity Flashcards
Magnesium + copper sulfate ->
Magnesium sulfate + copper
Metals from reactive to not so reactive
- potassium
- sodium
- lithium
- calcium
- magnesium
- aluminum
- zinc
- iron
- tin
- lead
- copper
- mercury
- silver
- gold
- platinum
What is more reactive sodium or potassium?
Potassium
What is an endothermic reaction
A reaction that takes in energy
What is a exothermic reaction?
A reaction that gives out energy
What is the oxygen test
Blow out the fire put it in a jar with oxygen and if it lights then the fire should start again- it relight a glowing splint
What is the test for hydrogen?
You put hydrogen gas in a jar then attach a tube then leave test tubes in it then light a splint and then put the splint in the tube- makes a squeaky noise
What is the test for carbon dioxide?
Put lime water to carbon dioxide- it will turn the lime water cloudy
What reacts quicker, powder or chips?
Powder
Is an explosion exothermic or endothermic?
Exothermic
What is the opposite of an explosion
Implosion
What is a chemical change
A change that cannot be put back to its original form
What is a physical change?
It can be turned back to its original form and no new forms/substances will be created
Which word describes a change from particles being widely spaced and moving around freely, to moving around very close to each other
- melting
- evaporating
- freezing
- condensing
Condensing
Which technique would you use to separate two liquids with different boiling point?
Distillation
State the conditions needed for iron to rust
Water and air
What kind of reaction is this:
Metal+oxygen -> metal oxide
This is an OXIDATION reaction as the metal has gained oxygen
What is more reactive lead or copper
Lead
What is more reactive mercury or copper
Copper
What is more reactive aluminum or calcium
Calcium
What is more reactive zinc or tin
Zinc
What is more reactive gold or silver
Silver
What is more reactive magnesium or aluminum
Magnesium
What is the most reactive metal
Potassium
What is the least reactive metal
Platinum
Is a cold pack an exothermic or endothermic reaction
Endothermic
What is a displacement reaction
It is when a more reactive metal replace the less reactive metal
Fuel (methane) + oxygen -> + water
H. O O. H
H c H. + O O -> OCO + HO OH
He H
