Reactions Flashcards
What are 3 uses of oxygen
Breathing apparatus
wielding
rocket fuel
What is the test for oxygen
Relights a glowing splint
What is the test for carbon dioxide
It turns the limewater cloudy
3 uses of carbon dioxide
Fire extinguishers
Fizzy drinks
Dry Ice
What is the test for hydrogen
Burning splint squeaky pop
What are 3 uses of hydrogen
Making margarine
Rocket fuel
Clean fuel
What is an exothermic reaction
A reaction that gives of heat
What is an endothermic reaction
A reaction that takes in heat
What is oxidation
Adding oxygen to a substance
What is reduction
Removing oxygen
What is a redox reaction
A reaction that reduction and oxidation occurring in the same reaction
What are safety precautions we use when using some reactive metals
Safety goggles
Tongs
What is the word equation for hydroxides
Metal+water-metal hydroxide +hydrogen
Most reactive to least reactive metals
Potassium
Sodium
Lithium
Calcium
Magnesium
Aluminium
Zinc
Iron
Tin
Lead
Copper
Silver
Gold
What is the word equation for rust
Iron+oxygen+water-hydrated iron(iii) oxide
What does salt water speed up
Rusting
What are 2 requirements for rusting
Oxygen+water
What are 4 methods used to prevent rusting
Oiling
Plastic coating
Galvanising
Sacrificial protection
What is galvanising
When iron objects are coated with a more reactive metal like zinc or chromium
A cheap method to prevent rust
Oiling
What is one example of sacrificial protection
When bars are attached to ships
Which metals aren’t good for galvanising
Copper and silver cause they rust
