Atomic Structure

Question 1

What is meant by the term molecule

Answer 1

A molecule consists of two or more atoms chemically bonded together

Question 2

What is meant by the term atom

Answer 2

The smallest piece of an element that can still be recognised as that element

Question 3

What is the mass AND charge of a proton

Answer 3

mass = 1
charge = +1

Question 4

What is the mass AND charge of an electron

Answer 4

mass = 1/2000
charge = -1

Question 5

What is the mass AND charge of a neutron

Answer 5

mass = 1
charge = 0

Question 6

What is the atomic number

Answer 6

The number of protons in an atom’s nucleus

Question 7

What is the mass number

Answer 7

The mass number counts the total number of protons and neutrons in the nucleus of an atom

Question 8

What are isotopes

Answer 8

Isotopes are atoms of the same element which have the same atomic number but different mass numbers. They have the same number of protons but different number of neutrons.