Question

EASY POINTS EASY EASY POINTS ​

Answer 1

i.

Mixture are made up of element that are not chemically bonded. (eg. In the air, containing O2, H2, N2 but jot mized together)

Compounds are made up of 2 or more type of atoms that are chemically bonded. (e.g CO2, H20)

ii.

Compound containing 2 elements :

• aluminium oxide (Al2O3)
• sodium chloride (NaCl)
• zinc sulfide (ZnS)

Compound containing 3 elements :

• copper carbonate (CuCO3)
• potassium nitrate (KNO3)

Answer 2

Compounds are substances made from atoms of different elements joined by chemical bonds. They can only be separated by a chemical reaction. ... A mixture is made by simply mixing together elements and compounds. No new chemical bonds are formed

compounds containing two elements

sodium chloride

zinc sulfide

aluminium oxide

compounds containing three elements

potassium nitrate

copper carbonate