Match the following:

The substance where no new substance is formed is called

physical change is where no new substance is formed.

In the chemical reaction, products are present on which side of the arrow?

in a chemical reaction the products are present on our right hand side.

In the chemical reaction, reactants are present on which side of the arrow?

in a reaction reactants are present on our left hand side.

Choose the correct option which suits the puzzle

Blowing is a fast change
Milk has lactic acid
Iron reacts with air to form rust
Reaction occurs when combining substances.

Pich the odd one out:

others are different types of acid while, it is a vegetable.

chemical change is also calles chemic reaction.
Lumps are formed when milk curdles.
Lactic acid is the acid preaent in milk.
When iron is exposed to air, iron changes its colour to brownish colour.

Pick the odd one out

other are are example of physical change whereas, it is an example of chemical change.

What is formed when milk curdles?

Curd

What does the picture define?

the picture depicts the changes.

The following image defines which type of change?

water added to sand and cement is a chemical reaction as it causes hardening of concrete through hydration.

The representation of the relation between the reactant, when there is more than one substance

+ is used to represent when there are more than one reactants in a reaction.

Which of the following acids are present in milk?

The real acidity in milk is due to lactic acid.

The relation between the reactants and products is represented by

The arrow shows the direction in which the reation occurs in a chemical reaction.

Which of the following is an example of chemical change?

cooking is an irreversible change and leads to formation of new products.

Iron rod changes its color as

iron rod changes its colour when exposed to air due to formation of rust whic is a chemical reaction.