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THE BIG MIDTERM
THE BIG MIDTERM
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This quiz reviews concepts take from the 1st half of the year for McQuaid Jesuit's CPS class.
Flashcards
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Questions
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Answers
1
What does an atom's atomic number measure?
reactivity
state
protons
neutrons
2
If you mix chocolate sauce into your milk, the sauce is the _____________ in the solution.
solvent
colloid
solute
mixture
3
What are the two main branches of of physical science?
geology and chemistry
chemistry and physics
chemistry and biology
biology and physics
4
What is the name of the scientist who first developed the periodic table?
Dimitri Mendeleev
Boris Yeltsin
Neils Bohr
Mr. Whalen
5
What must you find out after conducting an experiment and collecting data?
if the results can be changed
if the answers can corrected
if the results support your hypothesis
if the answers are right
6
What is a scientific model?
a representation of an object or system
an exact representation made of similar material
a representation of an object, but smaller
a familiar copy of an object
7
Which of the following is NOT a sign that a chemical change has taken place?
change in state
foaming or bubbling
production of light or heat
change in color or odor
8
True or False: Compounds must be joined in specific ratios.
True
False
9
What chemical property is responsible for rusting?
reactivity with oxygen
flammability
conductivity
nonflammability
10
The reverse of condensation is
evaporation
sublimination
boiling
freezing
11
Dividing the total distance traveled by the total time is how to calculate
average speed
average acceleration
average motion
average velocity
12
How do you break apart the substances that comprise a compound?
add a flammable element
chemical changes
power tools
physical changes
13
Which is a common unbalanced force acting on an object in motion?
inertia
friction
accerleration
speed
14
Air resistance causes the speed of an object to
increase
remain unchanged
decrease
become zero
15
A mystery element conducts electricity, is a bit malleable but is also brittle & dull. It is a?
metal
non-metal
nobel gas
metalloid
16
What forms when particles of two or more substances are evenly mixed?
suspension
compound
solvent
solution
17
A colloid is a mixture in which the particles the solute
do not reflect any light
float then sink to the bottom
are large enough to scatter light
mix in completely
18
A gas
has fast-moving particles
has a definite shape but no definite volume
has a definite volume but no defined shape
has particles that are always close together
19
To calculate an object's acceleration you need to know
starting point, endpoint, and object's mass
starting velocity, final velocity and time
distance traveled and speed
average speed and distance
20
The substances in a mixture, like a compound, must in a specific ratio.
True
False
21
What is a solid solution of a metal dissolved into a metal called?
suspension
alloy
colloid
compound
22
What happens when a liquid becomes a gas?
the particles move closer together
the particles give off energy
the particles slow down
the particles break away from each other
23
What is energy?
matter in motion
fossil fuels
power from the sun
the ability to do work
24
A 5 kg object has less inertia than an object with the following mass of (1kg = 1,000g)
1,500 g
6,000 g
2 kg
4 kg
25
Which of the following is an example of a compound?
soft drinks
glucose
nitrogen
gasoline
26
In a solid, the particles
move independently of one another
overcome the strong attraction between them
slide past one another
vibrate in place
27
Orbital motion is a combination of forward motion and
weightlessness
horizontal accerleration
free fall
frictional resistance
28
What are the steps that scientists use to answer questions and solve problems?
physical science
measurement
observation
scientific methods
29
Solution A has 25 grams of sugar in 100 ml of water. What is the concentration of the solute?
2,500 g/ml
4 g/ml
25 g/ml
.25 g/ml
30
How does a physical change differ from a chemical change?
new materials are produced
the composition of the matter is unchanged
new properties of the matter are observed
the change always involves heat or light
31
During physical changes matter always retains its
state
size
identity
texture
32
Which of the following best describes chicken soup?
solution
mixture
compound
element
33
Why can salt dissolve in water?
salt is a solution
salt is an element
salt is the solvent
salt is soluable
34
Which of the following results in a helpful increase in friction?
wax applied to skiis
sand applied to a slick sidewalk
sandpaper used to smooth wood
ball bearings added to skate wheels
35
What has mass and takes of space
matter
weight
space
volume
36
Which of the following choices best represents force?
a push or pull acting on a object
a push or a pull acting without an object
a push or a pull always causing acceleration
a push or a pull always causing motion
37
If a baseball and cannonball are dropped at the same time, which would hit the ground first?
the ball with the larger volume
the baseball
the balls land at the same time
the cannonball
38
What is the basic unit of length that a scientist is likely to use?
micrometer
meter
foot
inch
39
Which of the following will NOT break down compounds?
heat
filtering
electric current
a chemical change
40
Which of the following is a chemical property of matter?
reactivity
volume
density
solubility
41
What must a good hypothesis be?
correct
about animals
testable
about motion
42
What are three areas of science that use physical science?
meterology, cosmology, and biology
geology, meteorology, and biology
meterology, phrenology, and geology
astrology, geology, biology
43
What is an explanation for many hypotheses and observations called?
a model
a theory
a conclusion
a scientific law
44
How could a sugar cube be dissolved in water more quickly?
filtering
crush the sugar cube
let the cube sit in the water
cool the water
45
Which of the following is the most important part of gathering knowledge in science?
memorizing material
looking up answers
using the Internet
asking questions
46
What does all matter have, whether it is moving or standing still?
energy
gumballs
life
motion
47
Which is NOT a group of substances on the periodic table?
solids
Halogens
metals
nobel gases
48
A pitched baseball gets its horizontal motion from
the force of gravity
air resistance
projectile motion
the force of the hand throwing it
49
Which of the following is a chemical property?
density
boiling point
reactivity with acid
color
50
In what direction is a projectile accelerated?
horizontally forward
vertically downward
vertically upward
both vertically and horizontally
51
The melting point of salt is the same as its
sublimation point
freezing point
condensation point
boiling point
52
A solution that contains a large amount of solute is best described as
concentrated
insoluable
weak
dilute
53
Which of the these substances can be separated into simpler substances only by chemical means?
water
sodium
salt water
gold
