Worksheetsexam
Total questions: 94
Worksheet time: 1hrs 8mins
A compound that is made up of only carbon and hydron is called a(n) (a)
A hydrocarbon that has at least one double or triple bond is
saturated
isomer
unsaturated
ionic
A hydrocarbon containing only single-bonded carbon atoms is called a(n)... hydrocarbon
isotope
saturated
unsaturated
Compounds that have identical chemical formulas but different molecular structures and shapes are called
(a)
A hydrocarbon in which one or more hydrogen atoms is replaced by an -OH group is a(n)...
acid
adenine
amino acid
alcohol
A huge molecule made up of many smaller molecules is called a(n)
(a)
A huge molecule made up of many smaller molecules is called a(n)
isomer
polymer
monomer
carbohydrate
A polymer formed from amino acids is a
lipid
DNA
protein
starch
This substance is the main source of energy for the human body
(a)
suppose you have a carbohydrate with 12 oxygen atoms how many hydrogen atoms would it have
12
not enough info to determine
24
36
RNA is a
(a)
plastic is a(n)
polymer
monomer
protein
lipids
Cholesterol is a(n) needed to build cell membranes
(a)
An organic compound that has a -COOH group and a -NH2 group is a(n)
amino acid
carbohydrate
lipid
nucleic acid
The individual molecules that make up a polymer are called
(a)
The structure of benzene can be described as a
(a)
Which of the following explains why there are so many organic compounds
carbon has 4 valence electrons
carbon has 6 electrons
carbon is a nonmetal
carbon has 6 protons
Chemists and engineers separate petroleum into its indiviudal compounds by
(a)
The general formula for alkanes is (saturated all single bonds)
CnH2n+2
CnH2n
CnH2n-2
CnHn
The general formula for alkynes is
(a)
The general formula for alkenes is
(a)
This polymer __ accounts for 15 percent of your total body weight
proteins
lipids
carbohydrates
nucleic acid
The group that makes a hydrocarbon an organic acid is a(n)
(a)
Polymers that control the activities and reproduction of cells are
(a)
Amino acids have this element present that lipids and carbohydrates do not
nitrogen
carbon
hydrogen
oxygen
If you ride your bike down a straight road for 500 meters and then stop. Your distance and displacement would be
(a)
Motion is considered a change
speed
velocity
accleration
position
12.3 m/s west would be considered
(a)
A single point on a distance time graph tells us the
(a)
Acceleration is a rate of change of ____ hint: (think of the formula for accleration)
speed
velocity
force
inertia
inertia changes depending on
(a)
The speed you read on a speedometer is
average speed
instantaneous speed
force
inertia
you and a friend pushed a stalled car off the street. In order for the car to move you had to apply a(n)
(a)
A horizontal line of a distance time graph would indicate
increasing speed
decreasing speed
zero speed
acceleration
If the net forces on an object are zero then the forces are considered
(a)
In a problem what would be the unit for distance if the object was going 10 m/s
(a)
A fore is considered a(n)
velocity
push or pull that can change the motion of an object
unbalanced force
inertia
A very steep slope on a distance time graph would indicate what kind of speed
(a)
What would be the correct unit for acceleration
m/s
m/s/s
m/m/s
kgm/s
The distance travel per unit of time is
(a)
___ is a measure of how far an object has moved
distance
displacement
speed
velocity
When studying a line graph the horizontal axis is the
(a)
An object changing its velocity from 10 m/s to 3 m/s is undergoing ___ velocity
positive
negative
neutral
zero
The distance and direction of an object from a starting point is
(a)
The tendency of an object to resist any change in its motion is called
anti gravity
Higgs Boson
Newton
inertia
In a tug of war and one team moves the other team the forces are considered
(a)
A measure of how far an onject has moved from the starting point is called
displacement
inertia
speed
acceleration
In a problem you sometimes read an object at rest what does this tell you about the speed
can't be determined
it's 0
unbalanced forces
the object has a lot of inertia
If you traveled 5 miles to school and then 5 miles back home your distance would be
(a)
The Y axis on a distance time graph represents which variable?
independent
dependent
time
accleration
Numbers that precede(go before) symbols and formulas in a chemical equation are
(a)
Each substance to ther right of the arrow in a chemical equation is a(n)
inhibitor
reactant
product
catalyst
We did a lab where we heated copper metal for about ten minutes to make it bond to oxygen this reaction was an example of
(a)
When we put magnesium metal in hydrochloric acid the test tube got real hot, this was an example of a ___ reaction
endothermic
exothermic
flammable
toxic
Each substance on the left side of the arrow ina chemical equation is a (a)
According to the law of conservation of mass, how does the mass of the products in a chemical reaction compare to the mass of the reactants
reactants are always greater
mass of products greater
it makes no difference
the masses are equal
In a chemical equation, the symbol that means dissolved in water is ___
(I)
(ppt)
(dw)
(aq)
When one element replaces another element in a compound, the reaction is a (a) reaction
Which of the following could represent a decomposition process
compound + compound → compound + compound
compound → element + element
element+ compound → element + compound
element + element → compound
According to the law of conservation of mass, if two atoms of hydrogen are used a reactant, how many atoms of hydrogen must be part of the product
(a)
A change in which one or more substances are converted into a new substance is called a(n) ___ reaction
endothermic
exothermic
catalyst
chemical
In a (a) chemical equation has the same number of atoms of each element on each side of the equation
When most chemical reactions take place, some __ in the reactants must be broken, a process that requires energy
precipitates
chemical bonds
products
A chemical reaction in which two or more substances combine to form another substance is called a
(a)
If a precipitate, water , or a gas forms when two ionic compounds in a solution are combined, that reaction is
double replacement or displacement
single replacement
synthesis
decomposition
In class, we made copper oxide by combining copper and oxygen what kind of reaction did you witness? Even if you were absent look at the product and think about what it took to make it ?
single displacement
double replacement
synthesis
decomposition
In a chemical reaction where the products are low energy and the reactants are high energy. This would most likey produce a(n) (a) (think of a match tip before and after lighting it)
During a couple of labs this quarter, we placed a lit match near the mouth of the test tube. What gas were we most likely looking for
hydrogen
carbon dioxide
oxygen
neon
When a solid forms as a result of a chemical reaction between two aqueous solutions the resulting solid is called a
(a)
If heat must be added to make a chemical reaction go forward this indicates the reaction is
exothermic
endothermic
nuclear
ionic
Which of the following is a balanced chemical equation
2AgNO3+ 2NaCl → 3AgCl _ 2NaNO3
AgNO3+ NaCl → 4AgCl +2NaNO3
AgNO3+ NaCl→ AgCl + 3NaNO3
AgNO3+ NaCl→ AgCl + NaNO3
What type of reaction is shown in the following chemical equation NH3+ HCl→ NH4Cl
(a)
What type of chemical reaction is shown 2H20→ 2H2+ O2
(a)
In this double replacement reaction what would be the replacement element AgNO3+Kl→ Ag? + KNO3
O
K
N
I
The statement that for every action force there is an equal and opposite force is
Newton's First Law
Newton's Second Law
Newton's Third Law
Law of Universal Gravitation
The upward force exerted on an object falling through air is__-
a vacuum
inertia
air resistance
vertical velocity
The product of mass and velocity of an objects is its
(a)
An object in freefall is (think of the vomit comet)
free of earth's gravity
weightless
lighter than air
half way between the earth and moon
When two objects collide, the momentum of the pair after the collision is predicted by
the law of conversation of momentum
Newton;s first law of motion
Newton's second law of motion
the vertical and horizontal velocities
What type of friction would walking be an example of
(a)
In the famous footage of the Apollo 15, an astronaut dropped a hammer & feather on the moon to prove Galileo's theory that in the absence of atmosphere, objects will
fall at the same rate
not fall the moon has zero gravity
the hammer feller faster, but NASA used trick photography
remain motionless
At Marymount, Michaela used 20 Newtons of force on the canoe paddle. How much force did the water push back with?
10 N
20 N
0 N the water can't push
10 N, the water has more mas than the canoe
In the meter stick drop experiment, Reaganne calculated accleration due to gravity on earth was
98 m/s
9.8 m/s
98 m/s/s
9.8 m/s/s
At Marymount on the archery range, Kathleen pulled her bow back with 40 N of force before the arrow flew. This would be considered a(n)
action force
reaction force
gravitational force
frictional force
Reagan's rocket fired and did not move off the launch pad. Her rocket experienced what kind of friction
(a)
When building our rockets we added an orange plastic steamer to the cord connecting the nosecone to the rocket. Not only did the streamer increase visibility , it also increased
rolling friction
fluid friction
sliding friction
static friction
When Donavaughn's rocket was sitting on the launch pad which of Newton's laws of motion would apply
Newton's first Law of Motion
Newton's Second Law of Motion
The Law of the Conservation of Mass
Newton's Third Law
The path taken by an object dropped from an airplane is
(a)
If 2 identical cars were in a collision which of the following could be done to reduce the force on the occupants
increase the mass of the cars
increase the momentum before the collosion
airbag
decrease the speed before the collosion
At Marymount, Hope was stuck on the tire course she could not reach the next tire . Riley pushed one tire at the end into the next so Hope could reach the rope. what law did Riley use to help Hope
(a)
In yet another amazing lab activity we measure the acceleration of several skaters.What type of friction did these skaters experience
static
rolling
sliding
fluid
The rocket you flew used a small rocket engine that gave off heat and smoke. Did you witness a(n)
exothermic reaction
endothermic reaction
physical reaction
What are the two factors which determine the pull of gravity on an object
amount of matter in an object and volume
how much something weight
the mass and distance
the density of an object
Weight is the measure of
the amount of matter in an object
the volume of an object
the force of gravity
