Atoms Ions And Isotopes

Question 1

What is the radius of an atom

Answer 1

1 x 10 to the power of -10

Question 2

What is the relative charge and mass of a proton

Answer 2

Relative charge = +1
Relative mass = 1

Question 3

What is the relative charge and mass of a neutron

Answer 3

Relative charge = 0
Relative mass = 1

Question 4

What is the relative charge and mass of an electron

Answer 4

Relative charge = -1
Relative mass = 1/2000

Question 5

What is the total number of protons and neutrons called

Answer 5

The mass number

Question 6

What is the number of protons called

Answer 6

The atomic number

Question 7

What happens to an atom that has been ionised

Answer 7

The number of electrons is different to the number of protons as they have either been added or taken away

Question 8

Where are the symbols for the mass and atomic number on a chemical symbol

Answer 8

Mass number = at the top
Atomic number = at the bottom

Question 9

What is an isotope

Answer 9

Isotopes are a form of an element that has the same number of protons but a different number of neutron

Question 10

If an atom loses one or more electrons it becomes…

Answer 10

a positively charged ion

Question 11

If an atom gains one or more electrons it becomes …..

Answer 11

a negatively charged ion