S2 Chemical Balancing Act

What are small groups of atoms held together by chemical bonds called?

• Molecules

• Atoms

• Elements

• Compounds

When different elements join together what do they form?

• Molecules

• Atoms

• Elements

• Compounds

What is the name of NaBr

• Sodium bromate

• Sodium bromide

• Nanthium bromate

• Nanthium bromide

What is the name of CaCO₃

• Calcium carbon oxide

• Calcium carbonide

• Calcium Carbonate

Which of the following are all diatomic elements?

• oxygen, hydrogen, bromine and argon

• hydrogen, bromine, chlorine and carbon

• bromine, chlorine, nitrogen and hydrogen

• iodine, bromine, oxygen and nickel

Which of the following compounds is the cross over method NOT needed to work out the formula?

• Hydrogen oxide

• Nitrogen trihydride

• Magnesium chloride

• Sodium oxide

Which of the following is monatomic?

• Neon

• Carbon

• Oxygen

• Sodium

What is the valency of oxygen?

• 6

• 2

• 8

What is the formula of calcium oxide?

• Ca₂O₂

• CaO

• CO

• CaO₂

What is the formula of Titanium tetrachloride?

• TiCl₄

• TiCl₃

• TC₄

• TC₃