7th grade chemistry

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

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 is a precious solvent

Air and its components

Water pollution

Air pollution

Precautions to reduce pollution

Global warming

Greenhouse effect

What is a change

Physical Changes and Examples

Chemical Changes and Examples

Differences between physical and chemical changes

Activities

Crystallization

Methods of separation

Threshing and Winnowing

Filtration

Crystallization

Sedimentation and decantation

Distillation

Chromatography

Types of fibers

Natural fibers

Plant fibers-cotton and jute

Animal fibers- wool and silk