Page 12 - Chemistry ICSE Class IX

x ICSE Chemistry – 9

ƒ Valence electrons ƒ Valency ƒ Tendency to lose electrons ƒ Tendency to attract/gain electrons
ƒ Metallic and nonmetallic characters ƒ Chemical reactivity ƒ Nature of oxides ƒ Uses of modern
periodic table ƒ Alkali metals (Group 1) ƒ Alkaline earth metals (Group 2) ƒ Halogens (Group 17)
ƒ Zero group (Group 18)

6. Study of the First Element : Hydrogen 145–162

ƒ Discovery of hydrogen ƒ Resemblance with alkali metals ƒ Resemblance with halogens
ƒ Properties of hydrogen not common to both the alkali metals and halogens ƒ Isotopes of
hydrogen ƒ Preparation of hydrogen ƒ Laboratory preparation of hydrogen ƒ Manufacture of
hydrogen gas ƒ Oxidation ƒ Oxidising agent ƒ Reduction ƒ Reducing agent ƒ Oxidation–Reduction
is reciprocal ƒ Physical and chemical properties of hydrogen ƒ Uses of hydrogen

7. Study of Gas Laws 163–182

ƒ Physical characteristics of gases ƒ Measurable parameters of gases ƒ Boyle’s law (pressure-volume
relationship) ƒ Charles’ law (volume- temperature relationship) ƒ Charles’ law and the absolute
(Kelvin) temperature scale ƒ Relationship between Kelvin scale and Celsius scale of temperature
ƒ Ideal gas equation ƒ Standard temperature and pressure (STP) and normal temperature and
pressure (NTP)

8. Atmospheric Pollution 183–202

ƒ Environment and environmental pollution ƒ The atmosphere ƒ What are the harmful effects of
carbon monoxide ƒ Smog ƒ Acid rain ƒ Global warming ƒ The greenhouse effect ƒ Ozone depletion

Chemistry Practicals 203–234

1. Recognition and Identification of Gases 204
2. Action of Heat on Some Substances or Salts 208
3. Action of Dilute Sulphuric Acid on a Substance 215
4. Flame Test 218
5. Percentage Composition of a Mixture 220

6. Hard and Soft Water 223
7. Soaps and Detergents 228
8. Water Pollution and the Quality of Water 230