Physics 2

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  • Created by: kelz0209
  • Created on: 18-04-14 13:14
In the 'plum pudding' model of the atom, what are the 'plums'?
Electrons.
1 of 15
Give one man-made source of background radiation.
Fallout from nuclear weapons tests/ nuclear accidents/ dumped nuclear waste.
2 of 15
Which are the most ionising-alpha particles or gamma rays?
Alpha particles.
3 of 15
Give two factors that affect a person's average yearly radiation dose.
Location and job.
4 of 15
Which type of background radiation are pilots more exposed to than the average person?
Cosmic rays.
5 of 15
Give the relative charge for the following particles: (i)electron (ii)proton (iii)neutron
(i) -1 (ii) +1 (iii) 0
6 of 15
Name the two types of particle that the nucleus of an atom contains.
Protons and neutrons.
7 of 15
Describe how the atomic number of a nucleus changes when a beta particle is emitted.
It increases by one.
8 of 15
Describe how the mass number of a nucleus changes after alpha emission.
It decreases by four.
9 of 15
The table contains information about three atoms. What is meant by the mass number of an atom?
The number of protons and neutrons in the atom.
10 of 15
The table contains information about three atoms. Which of the two atoms are isotopes of the same element? Explain your answer.
Atom A and atom B because isotopes of the same element have the same atomic number.
11 of 15
Alpha and beta particles are deflected in electric and magnetic fields. Explain why alpha and beta particles are deflected in opposite directions.
They have opposite charge.
12 of 15
Alpha and beta particles are deflected in electric and magnetic fields. Explain why alpha particles are deflected less than beta particles.
Alpha particles have a much greater mass.
13 of 15
Rutherford and Marsden's scattering experiment led to their nuclear model of the atom. Describe what Rutherford and Marsden saw when they fired a beam of alpha particles at thin gold foil.
Most of the alpha particles went straight through the foil. But a small number of alpha particles were deflected straight back at them.
14 of 15
Describe the main features of their nuclear model of the atom.
Most of the atom is empty space. The nucleus of an atom is tiny and contains most of the mass and is positively charged.
15 of 15

Other cards in this set

Card 2

Front

Give one man-made source of background radiation.

Back

Fallout from nuclear weapons tests/ nuclear accidents/ dumped nuclear waste.

Card 3

Front

Which are the most ionising-alpha particles or gamma rays?

Back

Preview of the front of card 3

Card 4

Front

Give two factors that affect a person's average yearly radiation dose.

Back

Preview of the front of card 4

Card 5

Front

Which type of background radiation are pilots more exposed to than the average person?

Back

Preview of the front of card 5
View more cards

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