MEDIUM
6th ICSE
IMPORTANT
Earn 100

Match the compounds with their correct formulas.

Compounds

Formulas
1. Hydrochloric acid A. NaCl
2. Potassium hydroxide B. NaOH
3. Sulphuric acid C. KCl
4. Zinc hydroxide D. Ca(OH)2
5. Sodium chloride E. CaS
6. Nitric acid F. CuSO4
7. Calcium hydroxide G. CaCO3
8. Carbonic acid H. NH4Cl
9. Sodium hydroxide I.HCl
10. Copper sulphate J.ZnO
11. Potassium chloride K.HNO3
12. Calcium carbonate L.H2CO3
13. Magnesium sulphide M.MgS
14. Zinc sulphate N.MgO
15. Aluminium hydroxide O.KOH
16. Sodium carbonate P.ZnSO4
17.Calcium sulphide Q.Na2CO3
18.Magnesium oxide R.H2SO4
19.Zinc oxide S.Al(OH)3
20.Ammonium chloride T.Zn(OH)2

Important Questions on Elements, Compounds & Mixtures

EASY
6th ICSE
IMPORTANT

Explain the term mixtures. Give an example of mixtures of 

a) two elements

b) two compounds

c) elements and compounds

HARD
6th ICSE
IMPORTANT
Differentiate between homogeneous and heterogeneous mixtures with examples.
MEDIUM
6th ICSE
IMPORTANT
With reference to the mixture of iron and sulphur, state the main characteristics of mixture.
MEDIUM
6th ICSE
IMPORTANT
Tabulate a comparaitive chart to differentiate between elements, compounds and mixtures. Differentiate them with reference to a) the term b) existence c) properties d)separation of components.
EASY
6th ICSE
IMPORTANT
State the principle involved in the separation of solid-solid mixtures by sieving.
EASY
6th ICSE
IMPORTANT
State the principle involved in the separation of solid-solid mixtures by magnetic separation.
EASY
6th ICSE
IMPORTANT
State the principle involved in separation of solid-solid mixtures by sublimation.
EASY
6th ICSE
IMPORTANT
State the principle involved in the separation of solid-liquid mixtures by sedimentation and decantation.