Atomic Structure

Question 1

What is the relative charge and relative atomic mass of a proton

Answer 1

RAM=1
Relative charge=+1

Question 2

What is the RAM and relative charge of a neutron

Answer 2

RAM=1
relative charge=0

Question 3

What is the RAM and relative charge of an electron

Answer 3

RAM=1/2000
Relative charge=-1

Question 4

What is the radius of an atom

Answer 4

1x10-10

Question 5

What is an isotope

Answer 5

Same number of protons different number of neutrons

Question 6

How can an electron change orbit

Answer 6

They absorb energy (radiation)

Question 7

What is ionisation

Answer 7

When an electron gains too much radiation it can escape from the atom completely

Question 8

What are the dangers of ionising radiation

Answer 8

-causes cells to mutate=cancer
-kills instantly or overtime
-can cause mutations in unborn babies
-hair loss
-vomiting
-fatigue
-death in 2-6 days for high dose

Question 9

What is alpha radiation

Answer 9

When an alpha particle is emitted from the nucleus so the atom becomes a different element

Question 10

What do alpha particles have

Answer 10

• protons and neutrons
  -2+ charge
  -STRONGLY ionising
  -dangerous inside
  -stopped by paper
  -range of a few cm in the air
  -same structure as helium nucleus