Characteristics of a chemical change

When we add vinegar to the baking soda then the temperature increases.

Did the temperature increase, decrease, or stay the same when you combine baking soda and vinegar?

The burning of magnesium ribbon will not produce any heat.

If an iron nail is placed in a copper sulphate solution after some time colour of the solution changes from blue to green. This is an example of chemical change.

When carbon dioxide is passed through lime water, solution turns milky. This is example of a physical change.

Give one example for a change in a substance’s colour during a chemical reaction.

Physical changes are generally irreversible changes whereas chemical changes are reversible changes.

The physical changes are temporary changes whereas chemical changes are _____ changes

Write the differences between physical and chemical changes.

Write any two differences between physical changes and chemical changes.

How chemical change is different from physical change?

In ­­­­­_____reactions, heat is liberated.

An example of a reaction that liberates heat is

An example of a reaction that absorbs heat is

Change of colour in a reaction indicates a

Select the odd one out.

Select the odd one out.

Why is cutting vegetables a physical change, while cooking vegetables is a chemical change?

What is the difference between natural and man-made changes? Give two examples of each.

List different types of changes with examples.