Chemistry AQA 9-1 Paper 1 Atomic Struct, Periodic table Trilogy

What is the chemical symbol for the element Sodium?

• Na

• S

• NA

• na

What is the chemical formula for Fluorine?

• F

• 2F

• F₂

What is the name of the compound with the formula CaBr₂?

• Calcium bromide

• Calcium dibromide

• Calcium bromine

How many different types of atom are in one molecule of NaSO₄?

• 6

• 3

• 5

What is the formula of water?

• H2O

• HO₂

• H₂O

What is the definition of a compound?

• A substance made up of two or more elements that are chemically combined

• A substance made up of three or more elements that are chemically combined

• A substance made up of two elements that are chemically combined

What is the formula of a substance made up of Mg²⁺ ions and Cl^- ions?

• MgCl₂

• Mg₂Cl

• Mg₂Cl₂

What are the reactants in this word equation?

aluminium hydroxide + nitric acid → aluminium nitrate+ water

• aluminium hydroxide and nitric acid

• aluminium hydroxide and aluminium nitrate

• aluminium nitrate and water

__K + Cl₂ → __KCl

• 2, 4

• 4, 2

• 2, 2

Which numbers correctly fill the gaps to balance this equation? C₂H₄ + __O₂ → __CO₂ + __H₂O

• 3, 2, 2

• 6, 2, 2

• 5, 3, 4