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WorksheetsLife Science Semester I Review
Total questions: 60
Worksheet time: 51mins
Name
Class
Date
1.
Which question can best be investigated by a scientist?
a)
Should I buy a red shirt or a green shirt?
b)
Does chocolate milk or plain milk taste better?
c)
Does a plant need sunlight to grow?
d)
Which feels softer, cat fur or dog fur?
2.
This is the outcome of the experiment. We get data and results from this.
a)
Independent Variable
b)
Dependent Variable
c)
Control
d)
Constant
3.
How many independent variables should be tested at a time in a scientific investigation?
a)
none
b)
one
c)
two
d)
three
4.
Which is the dependent variable in Amelia's experiment?
a)
the number of bean plants in each group
b)
the amount of water given daily to each plant
c)
the height of each bean plant
d)
the amount of fertilizer given to each group of bean plants
5.
The variable that is changed on purpose is:
a)
Control
b)
Dependent
c)
Independent
d)
Outcome
6.
What is an inference?
a)
Just a guess.
b)
A statement based off of your observations.
c)
The same as an observation.
d)
Examples of something.
7.
When experimenting with the growth of a plant, a scientist uses three plants, two different fertilizers, equal light, and equal water. What type of variable is the water?
a)
Dependent
b)
Independent
c)
Control
d)
Outcome
8.
Convert from meters to cm: 9 meters
a)
900 cm
b)
90 cm
c)
0.9 cm
d)
0.09 cm
9.
1000 grams = _____ kilograms
a)
0.0001
b)
1,000,000
c)
10
d)
1
10.
5,000 mg = ____ g
a)
50
b)
5
c)
500
d)
5,000
11.
Is 20 g greater than, less than, or equal to 2 kg?
a)
greater than
b)
less than
c)
equal to
12.
How many significant figures does the following number have: 0.002040
a)
6
b)
4
c)
3
d)
2
13.
Round 0.010229 to four sig figs
a)
1022
b)
1023
c)
0.01023
d)
0.01022
14.
Round 1047.78 to three sig figs
a)
104
b)
105
c)
1050
d)
1050.00
15.
Determine the number of Significant Figures in 10.0-g
a)
5
b)
4
c)
3
d)
2
16.
Determine the number of Significant Figures in 10-L.
a)
4
b)
3
c)
2
d)
1
17.
How many Significant Figures in the number below?
4.56 x 103
4.56 x 103
a)
5
b)
4
c)
6
d)
3
18.
Solve and round accordingly.
2.34 + 0.00523 - 0.310
2.34 + 0.00523 - 0.310
a)
2.03523
b)
2.0352
c)
2.035
d)
2.04
19.
Solve and round accordingly.
1.256 - 0.004 + 123.09 = ?
1.256 - 0.004 + 123.09 = ?
a)
100
b)
124.3
c)
124.34
d)
120
20.
Solve and round accordingly.
230/13.3 =
230/13.3 =
a)
17.3
b)
17
c)
17.2
d)
17.2932
21.
Solve and round accordingly.
700 x 234 = ?
a)
373,800
b)
2 x 105
c)
4 x 106
d)
370,000
22.
Write 0.00000707 in scientific notation.
a)
7.07 x 10-6
b)
7.07 x 106
c)
707 x 108
d)
707 x 10-8
23.
Write 2.08 x 102 in standard form.
a)
208
b)
0.0208
c)
20,800
d)
0.208
24.
Write 7.8 x 10-3 in standard form.
a)
0.0078
b)
7,800
c)
78
d)
0.078
25.
Write 6,700 in scientific notation.
a)
6.7 x 103
b)
6.7 x10-3
c)
67 x 102
d)
67 x 10-2
26.
Write 52,300,000 in scientific notation.
a)
5.23 x 107
b)
5.23 x 10-7
c)
52.3 x 106
d)
52.3 x 10-6
27.
Solve:
(2.1×102) × (3.0×104)
(2.1×102) × (3.0×104)
a)
5.1 x 102
b)
6.3 x 106
c)
5.1 x 106
d)
6.3 x 108
28.
Solve:
(6 x 106) / (2 x 103)
(6 x 106) / (2 x 103)
a)
12 x 103
b)
3 x 109
c)
1.2 x 104
d)
3 x 103
29.
Write the answer in scientific notation.
7.3 x 105 + 3.7 x 105 =
7.3 x 105 + 3.7 x 105 =
a)
11.0 x 105
b)
1.1 x 1010
c)
1.10 x 1011
d)
1.1 x 10 6
30.
Write the answer in scientific notation.
4.1 x 105 + 5.5 x 106 =
4.1 x 105 + 5.5 x 106 =
a)
5.91 x 106
b)
9.6 x 105
c)
9.6 x 1011
d)
4.65 x 105
31.
Particles in an atom that are neutral and have no charge are
a)
negatrons
b)
electrons
c)
neutrons
d)
protons
32.
The smallest particle of any particular type of matter is known by which of the following terms?
a)
Compound
b)
Atom
c)
Chemical
d)
Element
33.
all matter is made of what
a)
energy
b)
atoms
c)
electrons
d)
compounds
34.
If the number of protons equal the number of _____, the atom will have no charge
a)
protons
b)
neutrons
c)
electrons
d)
nucleus
35.
The subatomic particle with a negative charge is the
a)
electron
b)
proton
c)
neutron
d)
nucleus
36.
What is the atomic number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
37.
What is the mass number?
a)
the number of protons
b)
the number of protons and neutrons
c)
the number of neutrons
d)
the number of protons and electrons
38.
Ions are:
a)
atoms with a positive or negative charge
b)
atoms with no charge
c)
atoms with ONLY a positive charge
d)
atoms with ONLY a negative charge
39.
How many neutrons does the isotope of lithium have?
a)
8
b)
3
c)
4
d)
5
40.
How many electrons in Fluorine's outer shell?
a)
1
b)
2
c)
7
d)
8
41.
What is the atomic number of Sodium?
a)
11
b)
22
c)
23
d)
34
42.
Which group has full electron shells?
a)
Noble Gases
b)
Metals
c)
Non-Metals
d)
Ionic Compounds
43.
Is Silicon a metal, nonmetal, or metalloid?
a)
Metal
b)
Nonmetal
c)
Metalliod
44.
Which element is in period 1 group 18?
a)
Helium
b)
Hydrogen
c)
Neon
d)
Lead
45.
Which element is in period 4 group 11
a)
Mercuy
b)
Copper
c)
Silver
d)
Gold
46.
A isotope has the same number of _______ and a different number of _______.
a)
neutrons, protons
b)
protons, electrons
c)
electrons, protons
d)
protons, neutrons
47.
A bond between H and O is classified as a(n) _________ bond.
a)
covalent
b)
ionic
c)
chemical
d)
nuclear
48.
A(n) _____ is a unique substance that forms when two or more elements combine chemically.
a)
element
b)
compound
c)
mixture
d)
all of the above
49.
A(n) _____ is the smallest particle of a compound that still has the compound’s properties.
a)
atom
b)
molecule
c)
element
d)
mixture
50.
Ionic Bonding involves...
a)
The transfer of protons
b)
The transfer of nuetrons
c)
The transfer of electrons
d)
None Of the above
51.
Covalent compounds
a)
Share electrons
b)
transfer electrons
c)
contain a sea of electrons
d)
conduct electricity
52.
What two types of atoms make a covalent bond?
a)
2 Nonmetals
b)
1 Nonmetal and 1 Metal
c)
2 Metals
d)
2 Noble Gases
53.
Predict the bond that will form between Be and F.
a)
Ionic
b)
Covalent
54.
Predict the bond that will form between Se and Cl.
a)
Ionic
b)
Covalent
55.
Predict the bond that will form between Sr and S.
a)
Ionic
b)
Covalent
56.
What is the number of valence electrons for Beryillum?
a)
1
b)
4
c)
2
d)
7
57.
What is the number of valence electrons for Oxygen?
a)
8
b)
6
c)
2
d)
1
58.
How many atoms of carbon (C) are in C6H12O6?
a)
3
b)
6
c)
12
d)
24
59.
How many Aluminum are in Al2O3?
a)
3
b)
2
c)
5
60.
Which of the following shows the correct way to balance the chemical equation?
Fe + O2 -> Fe2O3
Fe + O2 -> Fe2O3
a)
4Fe + 3O2 -> 2Fe2O3
b)
2 Fe + 3O2 -> Fe2O6
c)
4 Fe + O6 -> 2Fe2O3
d)
None of the options are correctly balanced.
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