7th grade chemistry

ACIDS AND BASES

  • What are Acids and Bases

  • Properties of acids and bases

  • Indicators and its types

  • Action of acids and bases on different indicators

  • Uses of acids & bases

  • Neutralization

  • Uses of neutralization in life

WEATHER CLIMATE AND ADAPTATIONS OF ANIMALS

  • Difference between weather and climate

  • Gathering weather reports

  • Instruments used to measure weather reports

  • Winds, storms and cyclones

  • Tsunami and hurricanes

  • Precautions and safety measures during cyclone

WATER AND AIR

  • Water is a precious solvent

  • Air and its components

  • Water pollution

  • Air pollution

  • Precautions to reduce pollution

  • Global warming

  • Greenhouse effect

PHYSICAL AND CHEMICAL CHANGES

  • What is a change

  • Physical Changes and Examples

  • Chemical Changes and Examples

  • Differences between physical and chemical changes

  • Activities

  • Crystallization

SEPARATION OF SUBSTANCES

  • Methods of separation

  • Threshing and Winnowing

  • Filtration

  • Crystallization

  • Sedimentation and decantation

  • Distillation

  • Chromatography

FIBRE TO FABRIC

  • Types of fibers

  • Natural fibers

  • Plant fibers-cotton and jute

  • Animal fibers- wool and silk