Chemical change

The slow eating up of metals layer by layer due to the reaction with moisture and oxygen is known as _____.

Oxygen is not required for corrosion to take place.

List the conditions for corrosion to take place.

Corrosion is caused by _____, moisture, vapours of chemicals in the air.

Cooking of rice is a physical change.

Define the following term:

Respiration.

Define the following term:

Curdling.

A chemical change is irreversible in nature.

7g of iron filings and 4g of sulfur powder is heated strongly with dilute H₂SO₄. Which gas would be produced?

7g of iron filings and 4g of sulphur powder is treated with dilute H₂SO₄ at room temperature. Name the gas produced.

Which of the following characteristics belong to a chemical reaction?

What type of change is observed during a neutralisation reaction?

What type of light is produced when a magnesium ribbon is burnt in a candle flame?

The burning of any substance is a:

The turning of lime water into milky is a standard test for

Which of the following process is an example of both physical and chemical change?

The burning of paper is a

Which of the following change can be called as a chemical change?

A change in which a new substance with different properties is formed is known as the _____ change.

Which of the following examples indicate a chemical change with an absorption of energy?