Question

what is atom?define 5marks​

Answer 1

Answer:

1. Atoms are basic units of matter and the defining structure of elements.

2. The word atom is a Greek word meaning indivisible. First it was thought that atoms are the smallest unit of matter. Later it was discovered that atoms are made up of protons, neutrons and electrons.

3. Electrons carry negative charge, protons carry positive charge while neutrons don't carry any charge on them.

4. Protons and electrons are found at the centre of atom and they form the nucleus of the atom while electrons orbit around the nucleus.

5. Virtually, all the mass of the atom resides in the nucleus. The weight of electrons is negligible.

Hope it helps.

Answer 2

Answer:

Atom the smallest particle of a chemical element that can exist.

thanks b l o c k