Change of state
What is an example of a physical change?
Reactants
What are the substances that react together called?
Burning
What is another name for combustion?
Lit splint goes squeaky pop
What is the test for hydrogen?
Permanent
Is a chemical change permanent or reversible?
Products
What are the substances that are formed in a chemical reaction called?
Heat, Fuel, Oxygen
What 3 things are needed for combustion to occur?
Relights a glowing splint
What is the test for oxygen?
Fizzing & flames
What are some signs that a chemical reaction has occurred?
Magnesium oxide
What is the product formed when magnesium reacts with oxygen?
Complete combustion
What kind of combustion occurs with a plentiful supply of oxygen?
Limewater turns from colourless to cloudy/milky
What is the test for carbon dioxide?
water + carbon dioxide
What are the products formed when a fuel is combusted?
coal, oil and gas
What are some examples of fuels that can be burned?