Atomic Structure Miss Adams Youtube

Question 1

What is an element?

Answer 1

An element is a substance made from one type of atom.

Question 2

What is a compound

Answer 2

A compound is a substance made of 2 or more elements joined together.

Question 3

What is all matter made up from?

Answer 3

All matter is made up from particles called atoms

Question 4

What three types of subatomic particles are atoms made up of?

Answer 4

protons, neutrons and electrons

Question 5

What is the centre of an atom called?

Answer 5

nucleaus

Question 6

What are the 2 subatomic particles in the nucleus?

Answer 6

protons and neutrons

Question 7

What are energy shells?

Answer 7

The orbits that electrons follow around an atom’s nucleus

Question 8

What is the mass of a proton?

Answer 8

1 atomic mass unit (amu)

Question 9

What is the mass of a neutron?

Answer 9

1 atomic mass unit (amu)

Question 10

What is the mass of an electron?

Answer 10

0 (negligible)

Question 11

In a neutral atom, what has the same count as the number of protons?

Answer 11

number of electrons = number of protons

Question 12

What sign do protons have?

Answer 12

+ (ve)

Question 13

What charge do neutrons have?

Answer 13

0, no charge, neutral

Question 14

What is the purpose of neutrons?

Answer 14

To help hold the nucleus together and stop the +ve protons from repelling (apart)

Question 15

Complete this chart.

Answer 15

Question 16

What do you count to get the atomic number?

Answer 16

Count the protons

Question 17

What can you identify from the atomic number?

Answer 17

The element, using a databook where the elements are in atomic number order.

Question 18

How do you calculate the mass number?

Answer 18

Add together the number of protons and the number of neutrons