Chemical Reactions Flashcards
After the temperature of the wax decreased rapidly, what happened to the speed of the wax’s temperature falling?
It slowed down (plateaued)
What must you do to separate salt from rocksalt?
Dissolve the rock salt in water so that the salt dissolves and the sand doesn’t. Filter to get salt water and then evaporate to be left with salt.
What is the product when you heat Copper Sulphate Crystals?
Water
Is Copper Sulphate + heat a reversible reaction?
Yes.
Copper + Heat —> Copper Sulphate + Water
Sulphate <— Powder
What is the product when a metal oxide is reacted with an acid?
Metal Salt + Water
What is the product when a pure metal is reacted with an acid?
Metal Salt + Hydrogen
What is the product when a metal carbonate is reacted with an acid?
Metal Salt + Water + Carbon Dioxide
What is formed when two elements are chemically joined together?
A Compound
What is an element?
A substance that has only one type of cell
What is a mixture?
When two or substances are mixed together
What is the difference between a compound and a mixture?
A compound is when two or more elements are chemically locked together.
A mixture is when two or more substances are mixed together.
What is the product of:
Iron + Sulphur?
Iron Sulphide
What is the product of:
Aluminium + Iodine?
Aluminium Iodide + Iodine
What does Potassium Permanganate become when it is heated?
Potassium Manganate + Manganese Oxide + Oxygen
What do Cobalt Chloride Crystals become when they are heated?
Cobalt Chloride Powder + Water
