Elements

Question 1

What is an element?

Answer 1

An element is a substance made up of atoms that all have the same number of protons in their nucleus.

Question 2

True or false?
Atoms can have different numbers of protons,neutrons and electrons

Answer 2

True

Question 3

Elements consist of atoms with (the same / a different ) atomic number

Answer 3

The same

Question 4

Is it the protons or the electrons that decide what type of atom it is?

Answer 4

Protons

Question 5

What is the name of an atom with only one proton in its nucleus?

Answer 5

Hydrogen

Question 6

What is the name of an atom with two protons in the nucleus?

Answer 6

Helium

Question 7

What are isotopes?

Answer 7

Different forms of the same element which have the same number of protons but a different number of neutrons

Question 8

Isotopes have (the same /different ) atomic numbers but (the same / different ) mass numbers.

Answer 8

Isotopes have the same atomic number but different mass numbers.

Question 9

How do you find the number of neutrons?

Answer 9

Mass number - the atomic number = number of neutrons

Question 10

How can you work out the relative atomic mass?

Answer 10

Relative atomic mass = sum of (isotope abundance x isotope mass number ) - sum of abundances of all the isotopes.