What is the SI unit of the amount of substance in chemistry?

Which type of chemical formula shows the simplest whole number ratio of atoms in a compound?

Which type of reaction releases energy to the surroundings causing the temperature to rise?

What is the concentration of a solution measured in moles per litre called?

Which type of reaction absorbs energy from the surroundings causing the temperature to fall?

Which scientific law states that equal volumes of all gases at the same temperature and pressure contain equal numbers of molecules?

What is the role of a catalyst in a chemical reaction?

Which type of reaction occurs when a more reactive metal displaces a less reactive metal from its salt solution?

What is the chemical formula for washing soda used in cleaning?

What is the chemical formula for potassium permanganate a strong oxidising agent?

Which element is a semiconductor and is the main component of computer chips?