M1 Matter and radiation

Question 1

Equation for specific charge

Answer 1

charge/ mass

Question 2

charge of proton

Answer 2

+1.60 *10 (-19) C

Question 3

charge of neutron

Answer 3

0 C

Question 4

charge of electron

Answer 4

-1.60 * 10 (-19) C

Question 5

mass of proton/ neutron

Answer 5

1.67 * 10 (-27) kg

Question 6

mass electron

Answer 6

9.11 * 10 (-31) kg

Question 7

Nuclear force

Answer 7

This is the force that holds the nucleus together and overcomes the electrostatic forces of repulsion by the protons. The range is roughly 3-4 fm. However, electrostatic have an infinite range. 3-4 to 0.5fm, it acts as an attractive force. Less than 0.5fm, it becomes a repulsion force that prevents the protons and neutrons form being pushed together.

Question 8

Alpha radiation

Answer 8

2 protons and 2 neutrons

Question 9

beta radiation

Answer 9

fast moving electrons

a neutron changes to a proton and a particle called antineutrino is emitted. It has no charge.

Question 10

gamma radiation

Answer 10

em radiation emitted from an unstable nucleus.