Atomic Structure

Question 1

What are all elements made up of

Answer 1

Atoms

Question 2

Where are all the elements found

Answer 2

The periodic table

Question 3

What are the 3 sub atomic particles called

Answer 3

Electrons,
protons,
neutrons

Question 4

Where are the protons and neutrons found in the atom

Answer 4

In the nucleus

Question 5

Where are the electrons found

Answer 5

Shells around the nucleus

Question 6

How are elements organised on the periodic table

Answer 6

Organised by atomic number

Question 7

What charge do neutrons have

Answer 7

No charge - neutral

Question 8

What mass do neutrons have

Answer 8

Mass of 1

Question 9

What charge are protons

Answer 9

Positive

Question 10

What mass are protons

Answer 10

1

Question 11

What charge are electrons

Answer 11

Negative

Question 12

What mass are electrons

Answer 12

1/1840 - very little

Question 13

Each element has 2 numbers - the top number is called the mass number. What does this tell you?

Answer 13

Mass number = number of protons + neutrons

Question 14

The bottom number for an element is the atomic numbers. What does this mean

Answer 14

Atomic number = number of protons or number of electrons in atom

Question 15

How do you find the number of neutrons in an atom

Answer 15

Mass number - atomic number

Question 16

If magnesium has the atomic number of 12 and mass number of 24 - how many protons, neutrons and electrons

Answer 16

Protons = atomic number = 12 protons
Number of electrons = number of protons = 12 electrons
Number of neutrons = mass number - atomic number = 24-12=12 neutrons

Question 17

If atomic number for chlorine is 17 and mass number = 35. How many protons, neutrons and electrons are there

Answer 17

Atomic number = number of protons or number of electrons so have 17 protons, 17 electrons
Mass number - atomic number = 35-17 = 18= number of neutrons

Question 18

Electrons are arranged in shells. How many are in each of the first 3 shells

Answer 18

Shell 1 - 2 electrons
Shell 2 - 8 electrons
Shell 3 - 8 electrons

Question 19

If nitrogen has atomic number 7 - what is the electronic structure

Answer 19

2 electrons in shell 1, 5 electrons shell 2
Electron structure - 2, 5

Question 20

If silicon has atomic number 14 what is the electron structure

Answer 20

2,8,4