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