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- 1. Multiple Choice
The graph shows how the intensity of different wavelengths of radiation from a hot object varies with temperature. What can NOT be concluded from the graph about how the distribution of the intensity of radiation from an object changes as the temperature of the object increases?
the intensity of every wavelength increases
the shorter the wavelength the more rapid the increase in intensity
the peak intensity occurs at shorter wavelength
the intensity of every wavelength decreases
- 2. Multiple Choice
A student was asked to investigate the heat loss from two metal cans, L and M. The cans were identical except for the outside colour. The student filled the two cans with equal volumes of hot water. He then placed the temperature sensors in the water and started the data logger. The computer used the data to draw the graph below. Which one of the following is a categoric variable?
the outside colour of the cans
the starting temperature of the hot water
the time
the volume of hot water
- 3. Multiple Choice
The volume of the piece of rock was 18.0 cm3. The student measured the mass of the piece of rock as 48.6 g. The graph below shows the densities of different types of rock. What is the most likely type of rock that the student had?
Basalt
Flint
Granite
Limestone
Sandstone
- 4. Multiple Choice
A student investigated the cooling effect of evaporation.She used the equipment (datalogger and probe) shown in the image to measure how the temperature of a liquid changed as the liquid evaporated. Which type of variable was the temperature in this investigation?
control
dependent
independent
- 5. Multiple Choice
The diagram shows an atom of uranium-235 being split into several pieces. Name the process shown in the diagram.
nuclear fission
nuclear fusion
chemical reaction
chain reaction
- 6. Multiple Choice
The diagram shows an atom of uranium-235 being split into several pieces. Name the particles labelled X.
neutrons
alpha particles
beta particles
protons
- 7. Multiple Choice
Uranium-235 is used as a fuel in some nuclear reactors. Name another substance used as a fuel in some nuclear reactors.
plutonium
coal
thallium
gallium
- 8. Multiple Choice
How are stars able to give out energy for millions of years?
By atoms joining together
By atoms splitting apart
By atoms joining togetherBy atoms splitting apartBy burning gases
- 9. Multiple Choice
How many protons and how many neutrons are there in an alpha particle?
protons: 2
neutrons: 2
protons: 2
neutrons: 1
protons: 1
neutrons: 1
protons:1
neutrons: 2
- 10. Multiple Choice
The pie chart shows the sources of the background radiation and the radiation doses that the average person in the UK is exposed to in one year. Radiation dose is measured in millisieverts (mSv). A student looked at the pie chart and then wrote down three statements. Which one of the following statements is a correct conclusion from this data?
In the future, more people will be exposed to a greater proportion of radon gas.
People that have never had an X-ray get
50 % of their radiation dose from radon gas.
The radiation dose from natural sources
is much greater than from artificial sources.
- 11. Multiple ChoiceIn order of most to least penetrating radiation we haveAlpha , Beta, GammaBeta , Gamma , AlphaGamma, Beta, AlphaGamma, Alpha, Beta
- 12. Multiple Choice
What letter is used to represent specific heat capacity?
H
P
C
T
- 13. Multiple Choice
What is the correct SI unit for energy? (provide the correct name and symbol)
calorie, C
temperature, C
Joule, J
Kelvin, K
- 14. Multiple Choice
A 0.01575 kg piece of iron absorbs 1086.75 joules of heat energy, and its temperature changes from 25°C to 175°C. Calculate the specific heat capacity of iron.
460 J/kgoC
1.654 J/kgoC
2,567,446.875 J/kgoC
- 15. Multiple Choice
Calculate volume if an object has a mass of 35 grams and a density of 48 grams per centimetres cubed.
0.73 cm3
1.4 cm3
1680 cm3
7.3 cm3
- 16. Multiple Choice
Calculate the density of an object that has a volume of 93 centimetres cubed and a mass of 13 grams.
0.14 g/cm3
7.15 g/cm3
0.026 g/cm3
1209 g/cm3
- 17. Multiple Choice
Calculate the density of an object that has a volume of 2 centimetres cubed and a mass of 88 grams.
44 g/cm3
0.037 g/cm3
2.7 g/cm3
108 g/cm3
- 18. Multiple Choice
Calculate mass if an object has a volume of 11 centimetres cubed and a density of 35 grams per centimetres cubed.
605 grams
5.5 grams
0.02 grams
550 grams
- 19. Multiple Choice
Calculate mass if an object has a volume of 65 centimetres cubed and a density of 33 grams per centimetres cubed.
2145 grams
214.5 grams
1.97 grams
0.5076923 grams
- 20. Multiple Choice
Calculate mass if an object has a volume of 72 centimetres cubed and a density of 81 grams per centimetres cubed.
5832 grams
583.2 grams
0.89 grams
1.125 grams
- 21. Multiple Choice
How old is a bone if it presently contains 0.3125g of carbon-14 and it was estimated to originally contain 80g? The half-life of carbon-14 is 5730 years.
5730 years old
11460 years old
45840 years old
22920 years old
- 22. Multiple Choice
The graph shows how the number of americium-241 nuclei in a sample changes with time. What is the half-life of americium-241?
430 years
500 years
400 years
800 years
- 23. Multiple Choice
State the number of neutrons in an atom of iodine-135 (13553I)
78
82
131
53
- 24. Multiple Choice
Carbon-14 and carbon-12 are two of the isotopes of carbon. The nucleus of a carbon-12 atom has the same number of ________________ as the nucleus of a carbon-14 atom.
protons
neutrons
electrons
- 25. Multiple Choice
An atom that loses an electron is called an _____________________and has an overall _________________________ charge.
ion ; positive
ion ; negative
isotope ; positive
ion ; neutral
- 26. Multiple Choice
In an experiment, a teacher put a 2 mm thick lead sheet in front of a radioactive source. She used a detector and counter to measure the radiation passing through the lead sheet in one minute. She then put different numbers of lead sheets, each 2 mm thick, in front of the radioactive source and measured the radiation passing through in one minute. The readings taken by the teacher are plotted in the graph. How does the amount of radiation transmitted by the lead change as the total thickness of the lead is increased?
it increases
it decreases
it stays constant
- 27. Multiple Choice
A teacher used a Geiger-Muller tube and counter to measure the number of counts in 2 minutes for a radioactive rock. The counter recorded 980 counts in two minutes. The background radiation count rate was 0.25 counts per second. Calculate the count rate for the rock.
7.92 per second
8.16 per second
490 per second
489.75 per second
- 28. Multiple Choice
A householder is worried about the radiation emitted by the granite worktop in his kitchen. 1 kg of granite has an activity of 1250 Bq. The kitchen worktop has a mass of 180 kg. Calculate the activity of the kitchen worktop in Bq.
225,000 Bq
6.94 Bq
0.144 Bq
25,000 Bq
- 29. Multiple Choice
The graph shows how the number of americium-241 nuclei in a sample changes with time. How many years does it take for the number of americium-241 nuclei to decrease from 10,000 to 5,000?
430 years
500 years
400 years
800 years
- 30. Multiple Choice
Americium-241 (24195Am) is an isotope of americium. Which of the isotopes given in the table below is not an isotope of americium?
A
B
C
- 31. Multiple Choice
Which of these atoms has the smallest number of neutrons?
3H
4He
5He
4Li
- 32. Multiple Choice
An atom in which the number of protons is greater than the number of neutrons is:
234U
6Li
3He
2H
- 33. Multiple ChoiceThis model was developed after J.J. Thompson discovered electrons, a particle smaller than an atom. Is shows electrons floating freely in a positive space.The "Plum Pudding Model" of the atomThe "Rutherford Model" of the atomDemocritus's model of the atomThe "Quantum Mechanical Model" of the atom
- 34. Multiple ChoiceThis model added on to previous models by showing electrons existed at certain "energy levels". However it does not accurately show what those levels look like.The "Bohr Model" of the atomThe "Rutherford Model" of the atomThe "Plumb Pudding Model" of the atomThe "Quantum Mechanical Model" of the atom
- 35. Multiple ChoiceThis model this model was the first to show a nucleus, consisting of protons and neutron. Electrons surround the nucleus but are not shown in distinct energy levels.The "Rutherford Model" of the atomThe "Plum Pudding Model" of the atomThe "Quantum Mechanical Modell" of the atomDemocritus's model of the atom
- 36. Multiple Choice
Which model of the atom is denoted as the "plum pudding" model?
A
B
C
D
E
- 37. Multiple Choice
Which of these correctly shows the numbers of sub-atomic particles in a 42Ca2+ ion?
Number of electrons: 20, Number of protons: 20, Number of neutrons: 22
Number of electrons: 18, Number of protons: 21, Number of neutrons: 21
Number of electrons: 18, Number of protons: 20, Number of neutrons: 22
Number of electrons: 20, Number of protons: 19, Number of neutrons: 23
- 38. Multiple Choice
Which of these correctly shows the numbers of sub-atomic particles in a 21Na+ ion?
Number of electrons: 11, Number of protons: 11, Number of neutrons: 10
Number of electrons: 10, Number of protons: 12, Number of neutrons: 9
Number of electrons: 10, Number of protons: 11, Number of neutrons: 10
Number of electrons: 11, Number of protons: 10, Number of neutrons: 11
- 39. Multiple Choice
Which of these correctly shows the numbers of sub-atomic particles in a 41K+ ion?
Number of electrons: 19, Number of protons: 19, Number of neutrons: 20
Number of electrons: 18, Number of protons: 20, Number of neutrons: 21
Number of electrons: 18, Number of protons: 19, Number of neutrons: 22
Number of electrons: 19, Number of protons: 18, Number of neutrons: 23
- 40. Multiple Choice
When He2+ particles were fired at a thin sheet of gold, about 1 in 8000 of the particles were detected at point Q. What conclusion can be drawn from the detection of He2+ particles at point Q?
Gold atoms have a small, positive nucleus.
Gold atoms have electrons in orbitals.
Gold consists of ions in a sea of delocalised electrons.
Gold atoms have more protons than He2+ particles.
- 41. Multiple Choice
In the early twentieth century the apparatus shown in the diagram was used to investigate atomic structure. When He2+ particles were fired at a thin sheet of gold, most of the particles were detected at point P. What conclusion can be drawn from the detection of He2+ particles at point P?
Gold atoms contain electrons.
Gold atoms contain protons.
Gold atoms contain neutrons.
Gold atoms are mainly empty space.
- 42. Multiple ChoiceWhat type of decay is being illustrated in following picture?beta decayalpha decay
- 43. Multiple ChoiceIf the half-life of uranium-232 is 70 years, how many half-lives will it take for 10 g of it to be reduced to 1.25 g?1 half-life2 half-lives3 half-lives4 half-lives
- 44. Multiple Choice146C has a half life of 5730 years, how many years would it take the 4.0 g sample to decay to 0.25 g?4 years5730 years22,920 years28,650 years
- 45. Multiple ChoiceWhat is the half-life of iodine-131?32 days8 days16 days24 days
- 46. Multiple Choice
Is radioactive decay 'spontaneous' ?
yes
no
sometimes
- 47. Multiple ChoiceWhat is matter?Anything that has mass and volumeThe shape of an objectHow much an object weighsThe pull of objects on one another
- 48. Multiple ChoiceVolume is.....the weight of an objectthe gravity of an objecthow much space an object takes upmeasured with a balance scale
- 49. Multiple ChoiceWhat do these isotopes of carbon all have in common?neutrons & mass numberatomic number and neutronsatomic number and electronsprotons, atomic number, and mass number
- 50. Multiple ChoiceHow many neutrons does the isotope of lithium have?8345
- 51. Multiple ChoiceHow many neutrons in C-14?67148
- 52. Multiple ChoiceHow many neutrons does an atom of the isotope Neon-22 have?12102220
- 53. Multiple Choicewhich atom has 4 neutrons?Li-6Li-7Li-8they have the same # of neutrons
- 54. Multiple ChoiceFour isotopes of lead include lead-204, lead-206, lead-207, and lead-208. The average atomic mass of lead is 207.2. Which isotope of lead is likely to be the most abundant.204206207208
- 55. Multiple ChoiceTwo isotopes of carbon are carbon-12 and carbon-14. These isotopes differ from one another by two protons.truefalse
- 56. Multiple ChoiceFluorine has an atomic number of 9. What can you conclude about an atom of fluorine from this fact?it has 9 protonsit weighs 9 gramsit has 9 electron shellsit has a boiling point of 9 degree celsius
- 57. Multiple ChoiceIn what part of an atom can protons be found?inside the electroninside the neutroninside the atomic nucleusinside the electron shells
- 58. Multiple ChoiceIf a sulfur atom has 16 protons, 16 electrons, and 16 neutrons, its atomic mass is:16324864
- 59. Multiple ChoiceIf a sulfur atom has 16 protons, 16 electrons, and 16 neutrons, its atomic mass is:16324864
- 60. Multiple ChoiceIf a hydrogen atom has 1 proton, 1 electron, and 1 neutron, its atomic number is:1234
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