What Happens When Radioactive Substances Decay And The Uses And Dangers Of Their Emisions

Question 1

If an atom of carbon has a mass number 14 and atomic number of 6 describe what this tells us about the number of electrons, neutrons and protons in the atoms

Answer 1

6 protons
8 neutrons
6 electrons

Question 2

What is meant by ionisation?

Answer 2

Loss or gain of electrons

Question 3

State what alpha and a beta particle are made up of.

Answer 3

Alpha- helium nucleus

Beta-high speed electron

Question 4

Which type of radiation is most ionising? Most penetrating?

Answer 4

Ionising- alpha

Penetrating-gamma

Question 5

What problem is associated with the products of nuclear fission?

Answer 5

They’re radioactive

Question 6

What are the 2 main dangers of ionising radiation?

Answer 6

Tissue damage

Possible mutations in DNA

Question 7

Thorium and radium used to be put in face creams back in the 1900’s. why is this no longer done?

Answer 7

Scientists became aware of the hazards and risks.

Question 8

What is the main advantage of nuclear power over fossil filled power stations?

Answer 8

No co2 released

Question 9

Describe the stages of a smaller star

Answer 9

Nebulae
Star
Red giant
White dwarf

Question 10

Describe the stages of a large star

Answer 10

Nebulae 
Large star 
Super massive red giant 
Super nova 
Neutron star 
Black hole