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Science 24 Final Review
Science 24 Final Review
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A #science24 final exam review
Flashcards
75 cards
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Practice quiz
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Questions
75
Answers
1
The word formula that describes any neutralization reaction is:
acid + water --> salt + base
base + salt --> acid + water
acid + element --> compound + water
acid + base --> salt + water
2
What type of person were airbags were originally designed to protect?
a pregnant woman
an adult male
a small elderly man
a child
3
Efficiency is expressed as
joules
a percentage
kW*h
Newton Watts
4
Which substance in stomach acid neutralization is a salt?
hydrochloric acid
magnesium chloride
water
magnesium hydroxide
5
Which product that should have the following Hazardous Household Product Symbol on the label.
salt
vinegar
baking soda
ammonia
6
Why does the
burning of coal contribute to pollution
?
it contains large amounts of hydrogen chloride
it contains large amounts of methane gas
it contains large amounts of sulfur
it contains large amounts of calcium
7
Which of the following best describes what the structure of DNA looks like?
staircase
solar system
ferris wheel
twisted ladder
8
Which of the following is NOT considered an input for the chemical reaction of photosynthesis?
water
sunlight
carbon dioxide
glucose
9
Which group of nutrients is mainly responsible for growth and repair of the body’s tissues?
proteins
steroids
fats
carbohydrates
10
If the product of a reaction becomes warmer, which is true?
the reaction is exothermic and energy is a product
it is exothermic and energy is a product
it is exothermic and energy is a reactant
the reaction is endothermic and energy is a reactant
11
After a vaccine, which does
your body produce to fight a specific disease
?
Antibodies
Antitoxins
Pathogens
Antigens
12
How are word equations organized?
a. Reactants --> Products
Products --> Reactants
Reactants = Products
Reactants = Products
13
Alcohol is a __________ and caffeine is a ______________.
depressant - stimulant
stimulant - depressant
depressant - depressant
stimulant - stimulant
14
Which is
not a type of food preservation?
Canning
Freezing
Salting
Sitting
15
What is energy?
the ability to rest
the ability to stabilize
the ability to work
the ability to move
16
Magnesium reacts with chlorine gas to make magnesium chloried. What is this an example of?
combustion reaction
neutralization reaction
decomposition reaction
composition reaction
17
What do bacteria need to grow?
moisture
all of these
food
warmth
18
This phenomenon includes ocean levels getting higher
conservation of energy
global climate change
acid deposition
non renewable resources
19
How likely is a child to have long arms if mom's genes were "SS" and dad's genes were "ss"
75%
25%
50%
100%
20
What time of day would you expect to have the highest internal body temperature?
eating
at rest
sleeping
exercising
21
As a pendulum swings, when is the potential energy greatest?
halfway between the bottom and rise of the swing
at the top of the swing
halfway between the rise and bottom of the swing
at the bottom of the swing
22
What is the unit for momentum?
km/h
kg*m/s
m/s
kg
23
What is the most common way to convert fossil fuels into energy?
neutralization
reaction
oxidation
combustion
24
Which is NOT true for combustion reaction?
produces carbon dioxide and water
oxygen is always involved
an example is a burning candle
usually required lots of energy
25
What is the best place and position for an infant in a vehicle?
back seat facing backward
back seat facing forward
front seat facing forward
front seat facing backward
26
Acetic acid is CH
3
COOH
(aq)
. How many of each type of atom are there in this molecule?
4 carbon, 2 hydrogen, 2 oxygen = 8 atoms in total
2 carbon, 4 hydrogen, 2 oxygen = 8 atoms in total
1 carbon, 4 hydrogen, 1 cobalt and 1 oxygen= 7 atoms total
2 carbon, 2 hydrogen, 2 oxygen = 6 atoms total
27
What is one reason we should develop more hybrid vehicles?
They are larger than other cars
They are small and adorable
They are fuel efficient
The batteries are heavier than engines
28
What is naturally acquired active immunity?
antibodies are passed from mother to child
body makes its own antibodies
antibodies are introduced to the body (vaccination)
ability to resist disease
29
what is the common name for sodium chloride?
table salt
chalk
salt substitute
epsom salt
30
The products of a chemical reaction...
all of these answers
can sometimes include energy
are what is made in a chemical reaction
are separated by a plus sign
31
Which of the following is true about adults and children?
because of their size, airbags are dangerous for children
an adult's head is smaller in proportion to their body size
a child's head is smaller in proportion to their body size
babies have an strong bone structure especially their neck
32
Drivers who have any alcohol on their breath
can be charged with
Dangerous driving
Driving Dangerously
BAC
Impaired driving
33
The Law of Conservation of Energy says that…
What goes up must come down
We should conserve energy
Energy can be changed from one form to another
Energy can be created and destroyed
34
Which of the following fibers is synthetic?
nylon
wool
cotton
silk
35
What term describes our bodies maintaining a constant temperature?
metabolism
communicable
homeostasis
vaccinated
36
Baked goods, such as bread, rise because chemical reactions release this gas.
carbon dioxide
ozone
oxygen
sulfur dioxide
37
What are the reactants in cellular respiration?
oxygen and carbon dioxide
glucose and oxygen
water and energy
carbon dioxide, water, and energy
38
In Canada the legal BAC level is
0.8
0.08
0.008
0.0008
39
Which symbol is used to indicate that a substance is dissolved in water?
(aq)
(s)
(l)
(g)
40
Which of these features best restrains your upper body during a collision?
3-point seat belt
2-point seat belt
steering wheel
air bag
41
A disease that can spread from an insect to a human is called
spreadable
non-communicable
virus
communicable
42
Evidence of a chemical change includes ALL of the following:
change of state, energy released, bubbles, precipitate
change of state, energy release, colour change, no change
no change, odour change, bubbles, precipitate
energy released, colour change, odour change, bubbles
43
Which of the following factors affects an individual's metabolism?
time of day
exercise
all of these
age
44
What do green plants use solar energy for?
production of nitrogen monoxide
production of carbon dioxide
production of food
production of heat
45
Cellular respiration is an example of what type of reaction?
neutralization
combustion
decomposition
energy
46
Which of the following names a system where energy is changed from one form to another?
converter
output
convection
input
47
Which of the following is the most dangerous form of transportation?
rail
air
road
sea
48
What are the reactants in cellular respiration?
Carbon dioxide, water, and energy
Water and energy
Glucose and oxygen
Oxygen and carbon dioxide
49
Which of the following is NOT a method of preserving metal?
galvanizing
liming
painting
sacrificial metal
50
Which of the following uses solar energy in a direct way?
photosynthesis
geothermal units
cellular respiration
thermal idonatries
51
What energy does a ski racer have as she crosses the finishing line?
muscular
potential
kinetic
geothermal
52
Swelling an increased redness
around an injury or infection
is known as ___
A physical defence
Tonsillitis
An inflammatory response
Macrophages
53
Which organism(s) perform photosynthesis?
only plants
only animals
both green plants and animals
none of these answers
54
What kind of energy is used to fry eggs?
solar
kinetic
thermal
potential
55
Which of the following is evidence that a chemical reaction has occurred?
There is a change of state
None of these answers.
A new substance is produced
No new substance is formed
56
Which road condition would make it a good idea to increase following distance?
all of these
icy road
fog
wet road
57
What kind of energy does a skier have standing still at the top of a hill?
kinetic
thermal
solar
potential
58
A car moving right crashes into a truck going left (same speed), the truck mass is 2x the car.
They will come to a complete stop.
The force will be equal to the sum of their momentum.
They will continue to move left
They will continue to move right
59
Taking an antacid is an example of what type of reaction?
neutralization
energy
combustion
decomposition
60
How many W/h are represented by a 100W hair dryer running for a half hour?
100
200
50
25
61
Which of the following problems is reduced by removing sulfur from natural gas?
ozone layer depletion
acid deposition
greenhouse effect
sulfur scrubbing
62
The gold used in jewellery and stainless steel and both examples of:
natural fibres
polymers
alloys
synthetic fibres
63
The main resource used for power plants in Alberta is...
coal
natural gas
water
oil
64
Which of the following sets of chromosomes is male?
Y
XX
XY
X
65
This type of energy of moving water spins the blades of a turbine
chemical
kinetic
potential
thermal
66
Which of the following is a fossil fuel
solar
hyrdo
nuclear
coal
67
Which science is the study of inherited traits?
Mendeletics
Chromosomes
Heredity
Genetics
68
How fast would you have to travel to cover 350 km in 3.5 hours?
100 km/h
90 km/hr
80 km/h
110 km/hr
69
Which of the following is NOT an example of a pathogen?
fungi
algae
bacteria
virus
70
Each human cell has ______ chromosomes.
22
46
23
39
71
Tears, hair, eyelashes are all examples of
inflammatory response
active defense
physical defence
immune response
72
Which of the following is true about restraining features?
operate all the time to keep you safe while driving
hold occupants of a vehicle in place
reduce the force of a collision by slowing the impulse
include rigid and crumple zones
73
When impulse occurs, what is true about mass and velocity?
mass changes but the velocity stays the same
mass is the same but velocity changes
mass and velocity both stay the same
both mass and velocity change
74
Four examples of mutagens are:
mutations, fungi, viruses, bacteria
genes, light, acid rain, drugs
chromosomes, radiation, chemicals, bacteria
radiation, chemicals, ultraviolet light, and drugs
75
Chemicals used to
kill insects
eating leaves on a fruit tree are examples of a(n)
polymer
pesticide
organelle
fertilizer
