Physical Changes
Physical Changes: Overview
This topic covers concepts, such as, Changes around Us, Physical Changes, Dissolving Sugar in Water & Melting of Wax etc.
Important Questions on Physical Changes
Which of these is a chemical change? Circle ‘Yes’ or ‘No’ to mark your response.
| Is this a chemical change? | Yes or No |
| Formation of clouds in the sky | Yes/No |
| Drying of leaves | Yes/No |
| A tadpole growing into a frog | Yes/No |
Write true or false for the statement given below. Rewrite the sentence if the statement is false.
Burning is sometimes a physical and sometimes a chemical change.Explain 'physical change' with the help of two examples.
How can you get back the original colour if you heat a hack-saw blade over a flame?
If you heat a hacksaw blade over a flame, does its colour change?
When water is boiled, steam is formed. How can you get the water back?
Ice melts to form water when you keep it in the sun. How can you get the ice back?
If you cut a piece of paper into many parts, you can lay the pieces together to acquire the shape of the original piece of paper. But is there a change in the property of paper?
Is dissolving of sugar in water a physical change or a chemical change?
When copper sulphate is dissolved in water, a chemical change occurs.
All physical changes are easily reversible.
A change in which no new substance is formed is a _____ change.
We can get large crystals of pure substances from their solutions by the process of
Which of the following is true for a physical change?
What will happen if thermometer drops from my hand?
When we heat iron, hydrogen peroxide, and carbon dioxide at the same temperature which will expand more?
Which of the following are a type of physical change.
Which of the following is a physical change.
Is sugar dissolving in water a physical change or chemical change?
Changes in which only _____ properties of a substance change are called physical changes.
