Atomic theory

Question 1

What is an element made up of?

Answer 1

Very tiny particles called atoms

Question 2

How do atoms form compounds?

Answer 2

Atoms from one element join with atoms from other elements

Question 3

What are atoms made up of?

Answer 3

Protons, neutrons and electrons

Question 4

What are electrons?

Answer 4

Negatively charged particles

They spin around the positive nucleus of the atom in circles

Question 5

What are protons?

Answer 5

Positively charged particles

Question 6

What are electrons mass,charge and location?

Answer 6

Mass=0
Charge= -1
Energy level / around the nucleus

Question 7

What are protons mass,charge and location?

Answer 7

Mass=1
Charge=1
in the Nucleus

Question 8

What are neutrons mass,charge and location?

Answer 8

Mass=1
Charge=no charge
in the Nucleus

Question 9

Why does the nucleus have an overall positive charge?

Answer 9

Because it contains only protons(positive) and neutrons(neutral)

Question 10

Why does an atom have no overall charge?

Answer 10

Because they contain equal numbers of positive charges (protons) and negative (electrons)
These opposite charges cancel each other

Question 11

Why does the atomic number do?

Answer 11

Tells you how many protons there are in an atom

Question 12

What is the mass number?

Answer 12

It’s the number of protons + neutrons

Question 13

What does a nucleitide looks like?

Answer 13

Mass number (top left)
Atomic Number (bottom left) 

And symbols of the elements.

Question 14

What are isotopes?

Answer 14

They are atoms with the same atomic number but different mass numbers

Question 15

What is RAM?

Answer 15

Is the average mass of all isotopes of a single element

Question 16

What is an ion?

Answer 16

They are charged particles and they are formed when atoms lose or gain electrons

Question 17

What happens when metal atoms lose electrons?

Answer 17

They form positive ions

Question 18

What happens when non metal atoms gain electrons?

Answer 18

They form negative ions

Question 19

What can be described about the noble gases?

Answer 19

They are stable as the have 8 on their outer energy level . This is why they are so unreactive

Question 20

What does the number of protons equal to in an atom?

Answer 20

The number of electrons

Question 21

what does a negative electron + positive metal ion make?

Answer 21

a strong electrostatic attraction - ionic compound

Question 22

In an electrolysis, which electrodes will get the negative ions?

Answer 22

At the positive electrode

Question 23

In an electrolysis, which electrodes will get the positive ions?

Answer 23

At the negative electrode

Question 24

what are the names of
Group 1
Group 7
Group 8

Answer 24

Group 1: alkalis
Group 7: halogens
Group 8: Noble gases

Question 25

What is the charge of the atom overall

Answer 25

Neutral, same amount of plus and negative

Question 26

How to work out the RAM

Answer 26

% x mass no + %+ mass no

100

Question 27

What is the RAM

Answer 27

Is the average mass of all isotopes within a single element

Question 28

When is an ion formed?

Answer 28

Imbalance of electrons and protons