3: Atomic structure

Question 1

Atom

Answer 1

• the smallest particle that can still have the chemical characteristics of an element

Question 2

Sub-atomic particles

Answer 2

1. protons
2. neutrons
3. electrons

Question 3

Proton number

Answer 3

• the number of protons in its nucleus

Question 4

Nucleon number

Answer 4

• total number of protons and neutrons in the nucleus

Question 5

Ions

Answer 5

• the particle formed when an atom gains or loses electrons, but number of neutrons and protons remains the same

Question 6

Isotopes

Answer 6

• atoms of the same element that have the same proton (atomic) number, but have different number of isotopes