Chapter 1- Atomic Structure

Question 1

Atom

Answer 1

Atoms are tiny particles which make up everything. From the oxygen we breathe to any material in our home

Atoms are the building blocks of everything

Question 2

Element

Answer 2

A substance which contains only one type of atom eg. Chlorine

Question 3

Compound

Answer 3

A substance which contains two or more different types of atoms chemically joined togetherness eg.water

Question 4

Mixture

Answer 4

Two or more different types of atoms that are not chemically joined together eg. Seawater

Question 5

Mass and charge

Answer 5

Mass of:
Proton : 1
Neutron: 1
Electron : 1/2000 
Charge:
Proton: +1
Neutron: 0
Electron: -1

Question 6

Mass number

Answer 6

Number of protons and neutrons in the nucleus

Question 7

To get the number of neutrons you..

Answer 7

Subtract the atomic number away from the atomic mass

Question 8

Shorthand electronic configuration for:

Answer 8

Sodium : 2,8,1
Potassium 2,8,8,1
Lithium: 2,1
Rubidium: 2,8,8,8,8, 3

Question 9

Remember: electron edition

Answer 9

Remember! That the number of electrons always equal the number of protons

Question 10

Maximum number of electrons per shell

Answer 10

First shell: maximum no. Of electrons= 2
Second shell: maximum no. Of electrons: 8
Third shell: maximum no. Of electrons: 8

Question 11

The arrangement of electrons

Answer 11

Around the nucleus there are several shells or orbits that hold the electrons. Electrons have a negative charge. The nucleus has protons and neutrons in it. Due to the nucleus holding the protons, it’s positively charged

Question 12

_______________ charged protons are attracted to __________________ charged ___________

Answer 12

Ans:

Positively charged protons are attracted to negatively charged electrons

Question 13

This attraction between protons and electrons mean….

Answer 13

This attraction means that electrons will try to get a shell as close to the nucleus as much as possible.