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WorksheetsPS Midterm Study Guide
Total questions: 70
Worksheet time: 42mins
Name
Class
Date
1.
What is the last step in the scientific method?
a)
analyze results
b)
experiment
c)
make observations
d)
repeat the work
2.
What is the first step in the scientific method?
a)
analyze results
b)
state a conclusion
c)
make observations
d)
research data
3.
Which type of data involves descriptions with words?
a)
dependent
b)
independent
c)
qualitative
d)
quantitative
4.
Which type of data involves numbers?
a)
dependent
b)
independent
c)
qualitative
d)
quantitative
5.
What is the independent variable on a graph?
a)
x-axis
b)
y-axis
6.
What is the dependent variable on a graph?
a)
x-axis
b)
y-axis
7.
This type of graph is used to compare data or individual items.
a)
circle
b)
pie
c)
bar
d)
line
8.
This type of graph is used to show a change over time.
a)
circle
b)
pie
c)
bar
d)
line
9.
This type of graph is used to show parts of a whole or percent.
a)
line
b)
pie
c)
bar
d)
all of the above
10.
What is the dependent variable for the graph?
a)
Girl Scout Cookies Sales
b)
Number of Cookies Sold
c)
Day
d)
Cannot be determined
11.
Using the following conversion factor: 1m = 100cm. Convert 375 centimeters into meters.
a)
3750 m
b)
3.75 m
c)
0.375 m
d)
0.0375 m
12.
Anything that has mass and takes up space is known as ____.
a)
volume
b)
matter
c)
density
d)
element
13.
Name the smallest unit of an element that keeps the properties of that element.
a)
mixtures
b)
compounds
c)
elements
d)
atoms
14.
Density, color, melting point, and freezing point are examples of a
a)
physical property
b)
chemical property
15.
Flammability, ability to rust, reactivity are examples of ____.
a)
physical property
b)
chemical property
16.
Coffee, tea, and soda are examples of ___.
a)
compounds
b)
elements
c)
heterogeneous mixtures
d)
homogeneous mixtures
17.
Italian dressing and chicken noodle soup are examples of _____.
a)
compounds
b)
elements
c)
heterogeneous mixtures
d)
homogeneous mixtures
18.
What is the formula for density?
a)
D = m/v
b)
D = m x v
c)
D = v/m
d)
D = m - v
19.
A substance has a volume of 40 mL and a mass of 800 g. What is its density?
a)
0.2 g/mL
b)
2 g/mL
c)
20 g/mL
d)
200 g/mL
20.
The process of gas changing to liquid is known as _____.
a)
melting
b)
freezing
c)
evaporation
d)
condensation
21.
Particles move faster at ____ temperatures.
a)
colder
b)
lower
c)
higher
d)
cannot be determined
22.
Particles move slower at ____ temperatures.
a)
lower
b)
hotter
c)
higher
d)
cannot be determined
23.
The Law of Conservation of Mass states that ____.
a)
there is less mass before a reaction than at the end.
b)
there is less mass after a reaction than at the start of the reaction.
c)
there is an equal amount of mass before & after a reaction.
d)
the amount of mass of a reaction cannot be determined.
24.
According to the kinetic theory, particles are ____.
a)
always slowing down.
b)
always speeding up.
c)
always moving in the same direction.
d)
always in motion.
25.
This state of matter makes up 99% of the universe and is able to conduct electricity.
a)
solid
b)
liquid
c)
gas
d)
plasma
26.
This state of matter has no definite shape and no definite volume. Its particles move around freely.
a)
liquid
b)
solid
c)
plasma
d)
gas
27.
When a solid (such as ice) melts to form a liquid, energy is _____.
a)
created
b)
destroyed
c)
absorbed
d)
released
28.
The atomic mass of an element that has 53 protons, 53 electrons, and 75 neutrons is ____.
a)
22
b)
53
c)
75
d)
128
29.
Dot diagrams are used to represent ____.
a)
quarks
b)
protons
c)
neutrons
d)
valence electrons
30.
An element's number of protons is equal to its _____.
a)
atomic mass
b)
atomic weight
c)
atomic number
d)
mass number
31.
Use your periodic table to find the identity of the element that contains 24 protons, 24 electrons, and 28 neutrons.
a)
Ni
b)
Os
c)
Cr
d)
Te
32.
Rows on the Periodic Table represent an atom's ____.
a)
protons
b)
valence electrons
c)
chemical properties
d)
energy level
33.
Give the group name for 5A (15) on the Periodic Table.
a)
Oxygen Group
b)
Halogens
c)
Nitrogen Group
d)
Carbon Group
34.
The Noble Gas group is the most ___ group on the Periodic Table.
a)
corrosive
b)
stable
c)
flammable
d)
reactive
35.
How many valence electrons does the Halogen Group have?
a)
15
b)
7
c)
5
d)
2
36.
This bond forms between a positive ion and a negative ion.
a)
double bond
b)
single bond
c)
covalent bond
d)
ionic bond
37.
A compound that shares electrons between two nonmetals is known as a(n) ____ bond.
a)
double
b)
single
c)
covalent
d)
ionic
38.
Use the following conversion factor:
1 Dg =10g, 1Kg = 1000 g
Convert 22 Kg = _____ Dg
1 Dg =10g, 1Kg = 1000 g
Convert 22 Kg = _____ Dg
a)
22,000 Dg
b)
0.022 Dg
c)
2200 Dg
d)
2.2 Dg
39.
Atoms with the same number of protons but different number of neutrons are called ____.
a)
mass numbers
b)
atomic mass
c)
isotopes
d)
ions
40.
Which SI unit is used to measure the mass of a textbook?
a)
kilograms
b)
meters
c)
liters
d)
none of these
41.
Which would be the best method to separate coffee grinds from water?
a)
evaporation
b)
filtration
c)
hands
d)
spoon
42.
Which of the following subatomic particle and corresponding charge is correct?
a)
proton = positive neutron =negative electron = neutral
b)
proton = negative neutron = positive electron = neutral
c)
proton = positive neutron = neutral electron = negative
d)
proton = neutral neutron = positive electron= negative
43.
How many electrons does Fluorine atom have on its second energy level?
a)
two
b)
seventeen
c)
seven
d)
nine
44.
How many electrons does Calcium atom have on its fourth energy level?
a)
two
b)
four
c)
seven
d)
nine
45.
The difference between propene and propane is that propene has a ____.
a)
triple bond
b)
single bond
c)
double bond
d)
carbon bond
46.
The difference between butane and butene is that butane has a ____.
a)
triple bond
b)
single bond
c)
double bond
d)
carbon bond
47.
Elements in the same group have the same chemical properties because they have the _____.
a)
same number of protons.
b)
same number of energy levels.
c)
same atomic number.
d)
same number of valence electrons.
48.
Burning a bonfire involves an increase in temperature and energy. This is an example of what type of reaction?
a)
Endothermic reaction
b)
Synthesis reaction
c)
Exothermic reaction
d)
Decomposition reaction
49.
Atoms that gain or lose electrons are called ____.
a)
ions
b)
isotopes
c)
protons
d)
electrons
50.
What is the compound name if you are given magnesium ion and bromine ion? (The numbers written in the answer choices are subscripts)
a)
MgBr
b)
Mg2Br
c)
MgBr2
d)
None of these
51.
What is the compound name if you are given potassium ion and fluorine ion? (The numbers written down in the answer choices are subscripts)
a)
KF
b)
None of these.
c)
KF2
d)
KF7
52.
Which subatomic particle is located in the electron cloud of an atom?
a)
quarks
b)
proton
c)
neutron
d)
electron
53.
A chemical reaction where separate compounds form a single new compound is called____.
a)
synthesis
b)
decomposition
c)
single displacement
d)
double displacement
54.
Elements that are shiny and good conductors are ____
a)
metals
b)
metalloids
c)
nonmetals
d)
noble gases
55.
Elements that are gases, dull, and poor conductors are____
a)
metals
b)
metalloids
c)
nonmetals
d)
noble gases
56.
These numbers precede symbols and formulas in a chemical equation.
a)
coefficient
b)
subscript
c)
atomic numbers
d)
mass numbers
57.
These numbers in a chemical formula indicate the number of atoms for each element in a compound.
a)
coefficient
b)
subscript
c)
atomic numbers
d)
mass numbers
58.
If fusion produces a larger nuclei, then fission produces ____ nuclei
a)
a medium-sized
b)
a smaller
c)
an inactive
d)
a same-sized
59.
Atoms that unite to form larger particles.
a)
fission
b)
fusion
60.
A pebble is lowered into a graduated cylinder with a volume of water equal to 2 ml. The height of the water rises to 10 ml. If the pebble is 16 g, find the density of the pebble.
a)
1.6 g/mL
b)
8 g/mL
c)
2 g/mL
d)
cannot be determined
61.
A stone is lowered into a graduated cylinder with a volume of water equal to 6 ml. The height of the water rises to 9 ml. If the stone is 15 g, find the density of the stone.
a)
2.5 g/mL
b)
5 g/mL
c)
1.67 g/mL
d)
cannot be determined
62.
Our stomach acid has a pH of 2. This is an indication that our stomach is ____.
a)
strongly basic
b)
weakly basic
c)
weakly acidic
d)
strongly acidic
63.
Ammonia (a household cleaner) has a pH of 12. This is an indication that the household cleaner is ___.
a)
strongly basic
b)
weakly basic
c)
weakly acidic
d)
strongly acidic
64.
This state of matter has a definite shape and definite volume and its particles vibrate.
a)
plasma
b)
gas
c)
liquid
d)
solid
65.
Which of these completes a double displacement reaction?
a)
FeS + 2HCl --> FeSH2 + Cl2
b)
FeS + 2HCl --> Fe + H2 + Cl2
c)
FeS + 2HCl --> SCl2H2 + Fe
d)
FeS + 2HCl --> FeCl2 + H2S
66.
The mass number for Barium on the periodic table reads 137, but the mass number for this same element is written as 140 on a worksheet. Is the mass number written on a worksheet correct or incorrect? Why?
a)
Incorrect. The teacher made a mistake.
b)
Incorrect. The periodic table is correct.
c)
Correct. The periodic table is wrong.
d)
Correct. Elements can have different mass numbers.
67.
Find the missing coefficient for the following chemical reaction:
2 C2H6 + ? O2 → 4 CO2 + 6 H2O
2 C2H6 + ? O2 → 4 CO2 + 6 H2O
a)
12
b)
7
c)
6
d)
4
68.
Find the missing coefficient for the following chemical reaction:
CH4 + ? O2 → CO2 + 2 H2O
CH4 + ? O2 → CO2 + 2 H2O
a)
1
b)
2
c)
4
d)
cannot be determined
69.
Which of the following shows the correct way to balance the chemical equation:
Fe + O2 → Fe2O3
Fe + O2 → Fe2O3
a)
2 Fe + 3 O2 → Fe2O6
b)
4 Fe + O6 → 2 Fe2O3
c)
2 Fe + 3/2 O2 → Fe2O3
d)
4 Fe + 3 O2 → 2 Fe2O3
70.
Which of the following shows the correct coefficients to balance the chemical equation:
ZnS + HCl → ZnCl2 + H2S
ZnS + HCl → ZnCl2 + H2S
a)
1 ZnS + 1 HCl → 1 ZnCl2 + 1 H2S
b)
1 ZnS + 2 HCl → 1 ZnCl2 + 1 H2S
c)
2 ZnS + 4 HCl → 1 ZnCl2 + 2 H2S
d)
2 ZnS + 2 HCl → 1 ZnCl2 + 1 H2S
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