C1

Question 1

What is the radius of an atom

Answer 1

1 x 10-10 (one times ten to the power of minus ten)

Question 2

Where is the nucleus in an atom

Answer 2

The nucleus is in the middle of an atom

Question 3

What is in the nucleus

Answer 3

The nucleus contains protons and neutrons

Question 4

What is the radius of a nucleus

Answer 4

The radius is 1 x 10-14( one times ten to the power of minus fourteen)

Question 5

What is the charge of the nucleus

Answer 5

The nucleus has a positive charge because of the protons

Question 6

What is the mass of the atom

Answer 6

Almost all the mass of the atom is concentrated in the nucleus (give a figure)

Question 7

Where do electrons move

Answer 7

Electrons move around the nucleus

Question 8

What is the charge of the electron

Answer 8

There is a negative charge and they cover a lot of space

Question 9

How do you determine their orbit

Answer 9

The volume of their orbit determines the size of the atoms

Question 10

What is the electron mass

Answer 10

Electrons virtually have no mass

Question 11

What is the charge of protons and electrons

Answer 11

Protons and electrons have an equal charge

Question 12

What is the charge of an atom

Answer 12

Atoms have a neutral charge which is a 0 (unlike ions) this is because the equal number of protons and neutrons

Question 13

Are protons and electrons equal in an ion

Answer 13

The number of protons and electrons are not equal in an ion this is because the overall charge for example an ion with a 2- charge has two more electrons than protons.

Question 14

Where is the mass number on an element

Answer 14

The mass number is the top number

Question 15

Where is the atomic number on an element

Answer 15

The atomic number is the bottom number

Question 16

What is the atomic number equal to

Answer 16

The atomic number is equal to the protons

Question 17

What is the mass number equal to

Answer 17

The mass number is the sum of protons and neutrons

Question 18

How do you work out the number of neutrons in an element

Answer 18

You take away the atomic number from the mass number

Question 19

How is an element formed

Answer 19

An element is formed formed by maultiple atoms which all have the same number of protons within their nucleus

Question 20

How is an atom decided what type of atom it is

Answer 20

Atoms all different numbers of protons, neutrons and electrons. It’s the number of protons within the nucleus that decide what type of atom it is e.g. an atom with one proton in its nucleus would be hydrogen and a proton with two protons in its nucleus would be hellium

Question 21

What is an element

Answer 21

If a substance only contains atoms with the same number of protons it is called an element. There are about 100 different types of elememts

Question 22

How are atoms represented

Answer 22

Letters will represent atoms 
C- carbon 
O-oxygen 
Na-sodium 
Pb-lead

Question 23

What is an isotope

Answer 23

Isotopes are different forms of the same element,which have the same number of protons but a different number of neutrons