Practice Questions for Physical and Chemical Changes Science Class 8
Take a beaker and mix green color powder in little water. Heat the solution. Water evaporates leaving the green color behind. Can you name this change?
Some pieces of chalk were taken and mixed with water. In this change, how many new substances are formed?
During a chemical reaction, one substance breaks into two or more simpler substances. Name this reaction?
Three different substances were taken and tested with litmus paper. The results are given below.
How can you obtain the substance Z?
Into what changes can these processes be categorized?
A. Milk --> Curd
B. Milk --> Paneer
Chemical changes are characterized by ______
Electric Current and its Effects
Light and Reflection
Structure of Matter
Acids, Bases and Salts
The Air Around Us
Where does Food Come From?
What are the Components of Food?
Properties of Magnets
Motion and Measurement of Distances
Electricity in Daily Life
Changes Around us
Sorting and Classifying Things
Separation of Substances
Fibres, Fabric and Clothing
Lights, Shadows and Reflection
Living Organisms and their Surroundings
The World Around us
Parts and Functions of Plants
Parts and Functions of Animals