1.2 Atomic structure, radioactivity, ionisation energy, electron configuration and hydrogen spectra

Question 1

Whats the relative mass, eletric charge and where is protons found?

Answer 1

Reletive mas - 1
Electric charge - +1
Found in the neucleus

Question 2

Whats the relative mass, eletric charge and where is neutron found?

Answer 2

Reletive mas - 1
Electric charge - 0
Found in the neucleus

Question 3

Whats the relative mass, eletric charge and where is electron found?

Answer 3

Reletive mas - 0.0005
Electric charge - -1
Arranged in energy levels or cells around the neucleus

Question 4

Definition of isotope

Answer 4

Isotopes are atoms of the smae element with different numbers of neutrons

Question 5

What’s the name of this ionization - α?

Answer 5

alpha

Question 6

Describe αlpha radiation

Answer 6

-Helium nucleus (4^ 2He)
2+ charge
-Low penetration, biggest mass
-Stoped by paper (few cm)
-Very high ionising power

Question 7

Describe βeta

Answer 7

-electron (-1e-)
-Modorate penetration
-Stopped by metel (few mm)
-Motorate ionising power

Question 8

Whats the name of the ionisation β?

Answer 8

Beta

Question 9

Describe γ

Answer 9

0 charge
- Very highly penetrating
- Stoped by a thick layer of lead
- Low ionising power

Question 10

What’s the name of the ioisation γ?

Answer 10

Gamma

Question 11

What’s a chemical reaction?

Answer 11

-Outer electron transferred to form ionic bonds or shared to form covalent bonds
-Energy involved is small
-Rate can be change (temp/surface area/light)

Question 12

What’s a nuclear reaction?

Answer 12

-In nucleus
-Energy involved is large
-Rate can not be altered (governed by half life)