Explanation

• Atoms of the same element with different numbers of neutrons are called isotopes.
• Atoms of the same element have the same number of protons and electrons but different numbers of neutrons.

Last verified on 09-11-2026

Explanation

• The instrument used to measure temperature is called a thermometer.
• A thermometer shows how hot or cold an object or place is.

Additional information:

• Barometer measures air pressure.
• Hygrometer measures humidity (moisture in air).

Last verified on 16-06-2026

Explanation

• Chlorine is commonly used to disinfect drinking water.
• It kills harmful bacteria and many other microorganisms.
• This process is called chlorination.

Last updated 08 Nov 2026 by NA

Explanation

• Diffusion is the process where particles move from an area of high concentration to low concentration.
• Ink spreads evenly in water due to molecular motion, resulting in uniform distribution.

Last verified on 08-11-2026

Explanation

• A Decomposition Reaction is a type of chemical reaction where a single compound breaks down into two or more simpler substances.
• This is the opposite of a Combination Reaction, where two or more substances combine to form a new compound.

Last verified on 07-11-2026