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WorksheetsBenchmark 3 Review
Total questions: 50
Worksheet time: 32mins
Name
Class
Date
1.
Which subatomic particles are located inside the nucleus?
a)
electrons
b)
protons only
c)
neutrons and protons
d)
protons and electrons
2.
Which subatomic particles have an electrical charge?
a)
only protons
b)
electrons
c)
neutrons and electrons
d)
protons and electrons
3.
An atom has 5 protons, 5 electrons, and 6 neutrons. What is the atomic number?
a)
5
b)
10
c)
11
d)
16
4.
An atom has 3 protons, 3 electrons, and 5 neutrons. What is the mass?
a)
3
b)
6
c)
8
d)
11
5.
An atom has 7 protons, 10 electrons, and 9 neutrons. What is the atomic number?
a)
7
b)
9
c)
10
d)
17
6.
An atom has 7 protons, 10 electrons, and 9 neutrons. What information would you use to find the element name?
a)
7 protons
b)
9 neutrons
c)
10 electrons
d)
17
7.
An atom has 7 protons, 10 electrons, and 9 neutrons. How would you find the mass of the atom?
a)
Add 7 protons and 10 electrons
b)
Add 9 neutrons and 10 electrons
c)
Add 7 protons and 9 neutrons
8.
An atom has 7 protons, 10 electrons, and 9 neutrons. What is the mass number?
a)
7
b)
16
c)
17
d)
26
9.
24 Na11How many protons are in the isotope?
a)
11
b)
24
c)
13
10.
Isotopes are atoms of the same element that have different masses due to different
a)
proton numbers
b)
electron numbers
c)
neutron numbers
11.
Carbon- 12 and Carbon-13 are isotopes of carbon. What MUST they have in common?
a)
mass number
b)
number of neutrons
c)
atomic number
12.
A carbon atom with a 6 protons, 6 electrons, and 7 neutrons forms which of the following isotopes?
a)
carbon-6
b)
carbon-12
c)
carbon-13
d)
carbon-19
13.
Which type of radioactive decay emission can penetrate paper, but is blocked by thick aluminum?
a)
Alpha
b)
Beta
c)
Gamma
14.
List the types of radioactive decay from least to greatest amount of energy.
a)
Gamma, Beta, Alpha, X-ray
b)
Beta, Alpha, U-V rays, Gamma
c)
Alpha, Beta, U-V rays, Gamma
15.
Combining smaller nuclei to form a larger nucleus is
a)
Fission
b)
Fusion
16.
Splitting a large nucleus into smaller nuclei is
a)
Fusion
b)
Fission
17.
Which type of nuclear decay emits a helium nucleus?
a)
Alpha
b)
Beta
18.
Which type of nuclear decay emits a helium nucleus?
a)
Alpha
b)
Beta
19.
Which type of nuclear decay is most harmful?
a)
Alpha
b)
Beta
c)
Gamma
20.
The sun is powered by nuclear...
a)
Fission
b)
Fusion
21.
What fraction of an unknown substance remains after four half-lives?
a)
1/2
b)
1/4
c)
1/8
d)
1/16
22.
What fraction of an unknown substance remains after 2 half-lives?
a)
1/2
b)
1/4
c)
1/8
d)
1/16
23.
You start with 500 grams of an unknown substance. How many grams remain at the 3rd half-life?
a)
62.5 g
b)
166.67 g
c)
200 g
d)
500 g
24.
You have 20 grams of a substance that has a half life of 2 minutes. How much remains at 6 minutes?
a)
12 g
b)
6 g
c)
2.5 g
d)
40 g
25.
In a sugar and water solution, the water is the
a)
solute
b)
solvent
c)
solution
26.
In a sugar and water solution, the sugar is the
a)
solute
b)
solvent
c)
solution
27.
A water solution that contains H+ ions is considered a(an)
a)
acid
b)
base
28.
A water solution that has OH- ions is considered a(an)
a)
acid
b)
base
29.
pH 4
a)
acid
b)
base
30.
pH 12
a)
acid
b)
base
31.
The pH scale goes from
a)
1-12
b)
0-14
c)
0-7
d)
1-15
32.
Acids have a pH
a)
less than 7
b)
more than 7
33.
Bases have a pH
a)
less than 7
b)
more than 7
34.
Vinegar has a pH of 6. It is a(an)
a)
acid
b)
base
35.
Toothpaste has a pH of 9.9. It is a(an)
a)
acid
b)
base
36.
If you stomach juice becomes too acid, you may take an anti-acid like Tums or Rolaids. The anti-acid will
a)
lower the pH
b)
increase the pH
37.
Most household cleaners like bleach and ammonia are
a)
acids
b)
bases
38.
To increase the rate at which a substance dissolves, you can
a)
stir the solution
b)
add cold solvent
39.
In which of the following will salt dissolve fastest?
a)
hot water
b)
cold water
40.
The handle of the pan becomes hot through
a)
conduction
b)
convection
c)
radiation
41.
Which heat transfer method is responsible for you burning your hand on the pan
a)
conduction
b)
convection
c)
radiation
42.
The room becomes warm by
a)
conduction
b)
convection
c)
radiation
43.
You place a spoon into a cup of hot coffee. The spoon handle becomes hot via
a)
conduction
b)
convection
c)
radiation
44.
When boiling water, the ______water rises while the _____ water sinks.
a)
cold, hot
b)
hot, cold
45.
We feel heat from the sun via
a)
conduction
b)
convection
c)
radiation
46.
you feel warmth from the camp fire by
a)
conduction
b)
convection
c)
radiation
47.
Thermal energy always moves
a)
from objects of lower temp to objects of higher temp
b)
from objects of lower temp to objects of higher temp
48.
If 2 kg of water are cooled from 35 degrees to 23 degrees. what is the amount of energy released? (The c of water = 4, 186)
Q = m c (Tf-Ti)
Q = m c (Tf-Ti)
a)
100.46
b)
2,386
c)
100,464
d)
2,386,020
49.
Which transfers in energy occur when you flip the light switch?
a)
mechanical to light to electrical
b)
mechanical to thermal to chemical
c)
electrical to mechanical to thermal
d)
electrical to light to thermal
50.
Bread burns in the toaster. Which energy transfers occurred?
a)
electrical to thermal to chemical
b)
thermal to electrical too chemical
c)
chemical to thermal to electrical
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