C1.2. Atomic Structure

Question 1

What is a molecule made up of?

Answer 1

Molecule are made from two or more atoms joined together

Question 2

What are bonds?

Answer 2

Bonds join the molecules together by attractive forces

Question 3

What is the relative mass and charge for each subatomic particle?

Answer 3

Proton 1 (Relative Mass) +1

Neutron. 1 (Relative Mass) 0

Electron 0.0005 (Relative Mass) -1

Question 4

What is the mass number?

Answer 4

The amount of protons and neutrons

Question 5

How to calculate the amount of electrons in an element

Answer 5

Mass number - atomic number

Question 6

What is an isotope?

Answer 6

atoms with the same number of protons and electrons but has a different amount of neutrons

Question 7

What are ions? How are they formed?

Answer 7

A charged particle

They are formed when atoms or groups of atoms lose or gain electrons.This can happen in chemical reactions

Question 8

What was Daltons ideas of the particle model?

Answer 8

Suggested all matter is made from atoms

“All atoms of an element are identical’. “different elements contain different types of atom”

Imagined them as tiny solid balls

Question 9

What was Thompsons ideas of the particle model?

Answer 9

Discovered the electron

“Atoms contain electrons”. “Atoms are neutral over all”

Created the plum pudding model; suggested that atoms are shares of positive charge with electrons dotted. around inside.

Question 10

What were Ruthefords ideas on the particle model?

Answer 10

The nucleus has a positively charged nuscleus containing most of its mass

Suggested that outside the nucleus, electrons orbit like planets in a solar system