Question of the Day
1. Knowing the ultimate purpose of each
activity, which of the following would MOST
LIKELY be a part of a scientific investigation?
A. Traveling to the rain forest
B. Extracting DNA samples from eight varieties
of rain forest beetles
C. Moving to the rain forest to see if you can
survive there.
D. Listening to the music of native Indians.
•
SCSh1,3,6,8
Q.O.D.
2. Which of the following is a technological
design investigation?
A. Buying a go-cart
B. Installing a new bumper
C. Finding ways to make the go-cart faster
D. Painting the go-cart
SCSh1,3,6,8
Q.O.D.
3.Jeremy decides to cook some pasta noodles.
He notices that the directions say to add salt
to the water before bringing the water to a
boil. The next day, Jeremy asks his science
teacher, Ms. Jackson, a question: "How does
adding salt affect the boiling temperature of
water?" Of course, Ms. Jackson asks Jeremy to
plan and conduct an experiment to find the
answer.
• The following questions are based on the
experiment Jeremy does to find an answer.
Q.O.D.
3. Jeremy writes an hypothesis before beginning
his experiment. Which of the following is the
hypothesis he wrote?
A. Pasta manufacturers and salt companies have
signed a business deal.
B. Adding salt to pasta water makes the pasta taste
better.
C. Adding salt to pasta water will cause the water
to boil at a higher temperature.
D. Certain types of salts will not dissolve in boiling
water.
Q.O.D.
4.What would be a likely control condition for
Jeremy's experiment?
A. One quart of boiling water with salt added
B. One quart of boiling water with no salt added
C. One quart of room temperature water with
salt added
D. One quart of room temperature water with
no salt added
QOD
5. Draw your own version of this graph
Q.O.D.
5.The graph summarizes Jeremy's results. What
conclusion can be made from these results?
A. Adding salt to the water causes the water to
boil at a higher temperature.
B. Adding salt to the water causes the water to
boil at a lower temperature.
C. Adding salt to the water has no effect on the
temperature of the boiling water.
D. There is not enough information for a valid
conclusion.
Q.O.D.
6.Based on Jeremy's findings, what would be a
benefit of adding salt to pasta water?
A. There is no obvious benefit of adding salt to
pasta water.
B. Salt clings to the cooking pot and allows the
pot to hold more heat.
C. Adding salt to the water chemically breaks
down the pasta to make it softer.
D. When you add salt to pasta water, the water
can get hotter and pasta is cooked faster.
Q.O.D.
7a. A control variable is:
A. rarely used in scientific experiments.
B. a variable that stays the same throughout an
experiment.
C. a variable that is changed in an experiment.
D. the largest, most powerful variable in an
experiment.
7b. Most often, an experiment involving the
scientific method begins with a:
A. hypothesis. B. observation. C. procedure.
D. question.
Q.O.D.
8. A cart is rolling down a ramp. If the angle of
the ramp is increased to make the ramp
steeper, the cart will:
A. accelerate slower.
B. accelerate at the same rate.
C. accelerate faster.
D. move at a constant velocity.
SPS.6
QOD
9. Cartridges used to fire paint balls are filled
with carbon dioxide (CO2) gas. Each time a
paint ball is fired, some CO2 gas escapes. The
volume of the cartridge is rigid and does not
change. Deyon buys a new CO2 cartridge. Chris
has the same cartridge, but his cartridge has
been used to fire several paint balls. Which of
the following is true of the cartridges
assuming both cartridges are at the same
temperature?
Answers next---
9. CONT’D-A. The pressure in Deyon’s cartridge is greater
than the pressure in Chris’s
B. The pressure in Deyon’s cartridge is less than
the pressure in Chris’s cartridge.
C. The pressure in Deyon’s cartridge is equal to
the pressure in Chris’ cartridge.
D. No relationship can be determined from the
given information.
SPS5
Q.O.D.
10. What state of matter has a definite volume
but no definite shape?
A. solid
B. liquid
C. gas
D. all states of matter
SPS 8 a-d
Q.O.D.
11. What state of matter can expand or contract
depending on the volume of its container?
a. solid
b. liquid
c. gas
d. none of the states of matter
SPS 8 a-d
Q.O.D.
12. The kinetic energy of a substance is greatest
in which state?
A. solid
B. liquid
C. gas
D. each state has equal energy
SPS 8 a-d
Q.O.D.
13. CALCULATE THE DENSITY
D= m (mass)
V (volume)
1. A block of stone material with a mass of
48 grams and a volume of 12cm3.
2. A volume of liquid water with a mass of
12 grams and a volume of 12cm3.
Q.O.D.
14. Quamine uses a vice to squeeze 3
containers. Which turns out to be the most
compressible?
A. The solid phase container
B. The liquid phase container
C. The gas phase container
D. The temperature must be known to answer
this question.
SPS 2,5,7
Q.O.D.
15. You heat 50mL of salt water on a Bunsen
burner until all the water has evaporated. NaCl
crystals are left behind. Which statement
describes the result of this action correctly?
A. The water has undergone a chemical change.
B. The salt has undergone a chemical change.
C. The salt and water have decomposed.
D. The salt and water have undergone a physical
change.
SPS5, 2b
Q.O.D.
16. Select the freezing point of water on the
Celsius Temperature scale.
A. -273.15 C.
B. O C.
C. 32 C.
D. 273.15 C.
SPS 4
Q.O.D.
The chemical formula for glucose is C6H12O6.
17. How many atoms of carbon make up one
molecule of glucose?
A. 1
B. 3
C. 6
D. 12
18. How many atoms of hydrogen?
A. 1
B. 3
C. 6
D. 12
SPS5,2b
Q.O.D.
19. Which of the following is an example of
kinetic energy?
A. a baseball in a locker
B. a baseball in the catchers mitt
C. a baseball flying in the air
D. a baseball stuck in a house gutter
SPS8 a-d
Q.O. D.
20. Which of the following can be separated by
filtering?
A. a solution
B. compound
C. an element
D. a heterogenous mixture
SPS5, 2b
Q.O.D.
21. Which of the following combinations would
result in a substance that is chemically
different than its components?
A. Carbon and oxygen form carbon dioxide
B. Sugar and water form a sugar-water solution.
C. Copper and tin form bronze
D. Oxygen and nitrogen form the air that we
breathe.
Q.O.D.
22. A good hypothesis:
A. is one that can be tested by experiment.
B. can be an educated guess predicting the
outcome of an experiment.
C. can only be formed when you know a little
about what is going to happen.
D. may be described by all of the above.
Question of the Day
23. Which of the following would result in a
chemical change?
A. Boiling
B. Cutting
C. Dissolving
D. Burning
SPS5,2b
Q.O.D.
24. What is a physical combination of two or
more substances called?
A. an element
B. a compound
C. a mixture
D. an isotope
SPS5, 2b
Q.O.D
25. Which of the following is a
heterogeneous mixture?
a. Salt water
b. carbon dioxide CO2
c. Bronze
d. Vegetable soup
Q.O.D.
26. When might a substance absorb heat but
not change temperature?
A. when it is in its solid state
B. when it is changing from one physical state to
another
C. when it is in its gaseous state
D. under no circumstances will a substance
absorb heat but not change temperature.
SPS 8 a-d
Q.O.D.
27. Identify the following substances as an
element (E), compound (C), or mixture (M).
carbon___
carbon dioxide___
milk___
calcium ____
SPS1,2,5
water___
blood___
sand & sugar _______
chicken noodle soup _____
Q.O.D.
28. Calculate the speed of the object from the
position vs. time graph shown below.
A.0.5 m/sec
C. 2 m/sec
B. 0.75 m/sec
D. 3 m/sec
Q.O.D.
29. Newton's first law of motion is also known
as:
A. the law of universal gravitation.
B. the law of force pairs.
C. the law of unbalanced forces.
D. the law of inertia.
SPS6
Q.O.D.
30. When compared to a high viscosity liquid, a
liquid with a low viscosity:
A. must have a lower volume.
B. is easier to pour.
C. must have a higher density.
D. takes longer to pour from one container to
another.
SPS4
Q.O.D.
31. At which of the following points on the
graph is the speed the greatest?
A. Point 1
B. Point 2
C. Point 3
D. Point 4
Q.O.D.
32. Rust is an example of
A. Oxidation
B. A chemical change
C. A physical change
D. Precipitation
SPS5,2b
Q.O.D.
33. A rocket can fly into space because:
A. when it is launched, the hot exhaust gases hit the
ground and push the rocket forward.
B. the rocket pushes the exhaust gases backward, and
there is an equal and opposite reaction pushing the
rocket forward.
C. when the gases are burning up, the mass of the
rocket decreases, changing the amount of gravity
on the rocket.
D. the launch pad pushes the rocket forward like a
slingshot.
SPS8
Q.O.D
34. An astronaut is planning a trip to a newly-discovered
planet. According to Newton's law of universal
gravitation, the astronaut's weight on the new planet
will be greater than his weight on Earth if:
(A) the new planet has less mass than Earth but the
same radius.
(B)the new planet has less mass than Earth and a
larger radius.
(C) the new planet has more mass than Earth but the
same radius.
(D) The size of the planet doesn't matter. Weight is the
same everywhere in the universe. SPS8
Q.O.D.
35. A book rests on a table. The force of gravity pulls
down on the book with a force of 20 newtons. What
prevents the book from accelerating downward at
9.8 m/sec2?
A. The table presses back up on the book with an
equal and opposite force of 20 newtons.
B. The table presses back up on the book with a force
greater than 20 newtons.
C. The table and the book together are accelerating
downwards at 9.8 m/sec2.
D. The inertia of the book holds it up. SPS8
Q.O.D.
36. An astronaut with a mass of 100 kilograms is
floating in outer space. If the astronaut throws a
2-kg wrench at a speed of 10 meters per second, his
motion would best be described as:
A. in the same direction as the wrench at a speed less
than 10 m/sec.
B. in the same direction as the wrench at a speed
greater than 10 m/sec.
C. in a direction opposite to the wrench at a speed
less than 10 m/sec.
D. in a direction opposite to the wrench at a speed
Q.O.D.
37. Shadari adds liquid water to an ice tray, and places
it in the freezer. What happens?
A. Thermal energy flows from the higher energy
phase(water) to the lower energy phase(cold air).
B. Thermal energy flows from the higher-energy
phase(cold air) to the lower energy phase(water).
C. Cold radiates from the cold air into the warm
water.
D. The insulation of the ice tray keeps the
temperature from changing much.
SPS7b
Q.O.D
38. Why do we have different units of time?
A. for variety
B. large units for small times and small units for
large times
C. large units for large times and small units for
small times
D. for different kinds of timers
SPS8
Q.O.D.
39. A marble rolls along the track below with no
friction. The sequence of positions on the
track listed in order from the lowest kinetic
energy to the highest kinetic energy is:
A) 1, 5, 4, 3, 6, 2 B) 1, 2, 3, 4, 5, 6
C) 1, 5, 4, 2, 3, 6 D) none of the above.
SPS8
Q.O.D.
40. What occurs when waves bend around
corners or pass through small openings?
A. absorption
B. reflection
C. diffraction
D. refraction
SPS6
Q.O.D.
41. Which of the following is true regarding
mechanical waves?
A. Mechanical waves must travel through
matter
B. Mechanical waves can travel through matter
and space.
C. Mechanical waves can only travel through a
vacuum
D. Mechanical waves can change matter.
Q.O.D.
42. Longitudinal waves
A. have their oscillations perpendicular to the
direction they move in.
B. are string vibrations.
C. are water waves.
D. have their oscillations in the same direction
they move in.
SPS9
Q.O.D.
43. Quan is cold and puts on a hoodie. In a few
minutes he feels warm. Why?
A) The hoodie adds heat to Quan’s body.
B) The hoodie took heat from the air around
Quan’s body.
C) The hoodie slowed the heat loss from Quan’s
body.
D) The hoodie increased the loss of cold from
Quan’s body.
Q.O.D.
44. A steel ball is released & allowed to roll down a
ramp. Identify the statement that describes changes
in potential energy (PE) and kinetic energy (KE).
A) PE & KE are both the greatest mid-way down the
ramp.
B) PE & KE both remain constant.
C) PE is greatest at the top. KE is greatest at the
bottom.
D) PE is greatest at the bottom. KE is greatest at the
top.
Q.O.D.
45. What process does the following describe:
“a block of dry ice sitting on a lab bench has a
cloud of gas around it?”
A) Melting
B) Sublimation
C) Evaporation
D) Fumigation
Q.O.D.
46. X-rays are representative of what type of
energy?
A) Thermal
B) Nuclear
C) Electromagnetic
D) Chemical
Q.O.D.
47. Select the electromagnetic wave with the
longest wavelength.
A) Infrared radiation
B) Radio waves
C) Visible light waves
D) Microwaves
Q.O.D.
48. Which of the following statements about
suspensions is TRUE?
A. A suspension contains particles smaller than
those of a solution.
B. A suspension cannot be filtered.
C. The large particles in a suspension eventually
settle to the bottom of the container.
D. A suspension is a true solution.
SPS6
Q.O.D.
49.Which of the following block and tackle systems has the
largest mechanical
advantage?
A. System A.
B. System B.
C. System C.
D. All three systems have the same mechanical
advantage.
SPS8
Q.O.D.
50.Do any of the atom diagrams below
represent atoms of the same element?
A. No, they are all different elements.
B. Yes, atom A and atom B are the same.
C. Yes, all of the atoms are the same.
D. Yes, atom A and atom C are the same.
Q.O.D.
51. Identify the following on the periodic table.
A. The chemical symbol for mercury
B. The period and group of gold.
C. The atomic mass of iron.
D. The atomic number of neon.
E. The element represented by Cu.
SCSh,7c
52.
Use your periodic table in your textbook to
help figure out the answers.
A. Find the number of neutrons in Gold.
B. What sub-atomic particle does the atomic
number represent?
C. What is the atomic mass of Gold?
D. How many electrons does Gold have?
Q.O.D.
53.
A. Where are valence electrons located?
B. What element has an
atomic mass of 101.07?
C. What is the mole mass weight of the
element in B above?
Q.O.D.
54. Using the information below, determine the
number of neutrons that most _______ atoms
contain.
29
??
????????
63.546
2,8,18,1
A. 29
B. 35
C. 64
D. 93
55.
Use your periodic table in your textbook to find
the answers. Find Tungsten.
a. What sub-atomic particle is the atomic
number? How many in Tungsten?
b. Tungsten’s atomic mass?
c. Tungsten’s number of electrons?
d. Tungsten’s number of neutrons?
Q.O.D.
56.
A. What is the total number of oxygen atoms in
the products 4CO2 + 6H2O?
A. 7
B. 14
C. 12
D. 3
B. What is the total number of oxygen atoms in
the reactants 2N2O5 + NO?
A. 7
B. 8
C. 3
D. 11
SPS2
Q.O.D.
57. Which of the following is a true statement?
A. Matter is conserved in a chemical reaction.
B. Matter is created in a chemical reaction.
C. Matter is destroyed in a chemical reaction.
D. All of the above statements can be true
depending on the reaction.
SPS5,2b
Q.O.D.
58a. Which particles have approximately the same
mass?
A. Proton and electron
B. Proton and neutron
C. Electron and neutron
D. Electron and alpha particle
SPS1a.
58b . An atom contains ____ in various energy levels.
A. neutrons
B. protons
C. electrons
D. ions
Q.O.D.
59. Using the periodic Table:
a. Write the number of valence electrons in an
atom of Beryllium and Magnesium.
b. Are oxygen and selenium in the same period
or group?
SPS4,8
Q.O.D.
60. Answer the following questions about the
chemical reaction for the combustion of
methane gas: CH4 + O2CO2 + H2O
Identify the reactants.
A.) CO2 and H2O B.) CH4 and O2
C.) O2 and H2O D.) CH4 and CO
Identify the products.
A.) CO2 and H2O (B.) CH4 and O2
C.) O2 and H2O (D.) CH4 and CO2 cont’d----
Q.O.D.
CONT’D--60. CH4 + O2CO2 + H2O Is the chemical
reaction for the combustion of methane
balanced? If not, select the correct equation
from the ones listed below.
A. Yes, it is balanced.
B. No, this is balanced: CH4 + O2CO2 + 4H2O
C. No, this is balanced: CH4 + 2O2CO2 + 2H2O
D. No, this is balanced: CH4 + 4O2CO2 + H2O
SPS2
Q.O.D.
61. Find Lithium and Sodium in the periodic
Table. Which of the following statements is
true regarding these two elements?
A. They have the same number of electrons in
their valance shell.
B. They have the same number of protons in
their nucleus.
C. They are both noble gases.
D. They are in the same row of the Periodic
Table.
SPS1.4
Q.O.D.
62. Which subatomic particle will be MOST
electrostatically attracted to a negatively
charged object?
• A) Proton
• B) Neutron
• C) Electron
• D) Beta particle
SPS10c.
Q.O.D.
63. A chemical equation is balanced when:
A. there are the same number of atoms on the
reactant side and the product side
B. there are the same kind of atoms on both the
reactant side and the product side
C. there are the same number and kinds of
compounds on both the reactant and the
product side
D. there are the same number of each kind of
atom on both the reactant and the product
side
SPS2
Q.O.D.
64.Using the table below for reference, find the
formula mass for nitric acid, HNO3.
Atom
Atomic Mass
Hydrogen
1.010
Nitrogen
14.01
Oxygen
16.00
A. 63.02 amu B. 16.01 amu
C. 31.02 grams
D. 48.00 amu
Q.O.D.
65. The principle of conservation of atoms is
satisfied in a chemical equation when:
A. all of the atoms involved in the equation have an
oxidation number of 1+.
B. the reactant side has the same number of each type
of atom as the product side.
C. the sum of the coefficients on the reactant side is the
same as the sum of the coefficients on the product
side.
D. each atom on the product side has the same
subscript that it had on the reactant side. SPS2
Q.O.D.
66.a.)Which of the following substances is
acidic?
A. Distilled water (B). Hand soap
C. Vinegar (D). Ammonia
66.b.) Which of the following substances is a
base?
A.Vinegar (B). Ammonia
(C). Lemon juice
(D). Distilled water
SPS6
Q.O.D.
39. Magnesium(Mg) looses 2 electrons to form a
magnesium ion. Chlorine(Cl) gains one
electron to form a chloride ion. Select the
correct formula for magnesium chloride.
A. MgCl
B. Mg2Cl
C. MgCl2
D. Mg2Cl2
SPS2b
Q.O.D.
45a. Water is a solvent in which of the following
solutions?
A. Air
B. Liquid sterling silver
C. Saline (salt) solution
D. Corn oil
45b. Fourteen-karat gold is:
A. an alloy. B. a solution.
C. a mixture of two solids.
D. All of the above are correct.
SPS6
QOD
47. Which of the following pH values is the most
acidic?
A. 1
B. 3
C. 5
D. 14
48.A neutral solution has a pH of:
A. 1
B. 5
C. 7
D. 14
SPS6
Q.O.D.
49. An example of an exothermic reaction is:
A. refining aluminum ore.
B. activating an instant cold pack.
C. heating "meals-ready-to-eat" (MREs) by
pouring water into the ration heater.
D. changing water to steam.
SPS2
Q.O.D.
51.Which of the following is not exothermic
A. heat is produced
B. Mg + 2H2O --> Mg(OH)2 + H2 + energy
C. more energy is required to break the bonds in
the reactants than is released from the
formation of new bonds in the product
D. less energy is required to break the bonds in
the reactants than is released from the
formation of new bonds in the product
SPS2
Q.O.D.
52. Which of the following is not endothermic
A. heat is absorbed
B. NH4NO3 + H2O + energy --> NH4 + NO3
C. More energy is required to break the bonds in
the reactants than is released from the
formation of new bonds in the product
D. Mg + 2H2O --> Mg(OH)2 + H2 + energy
SPS2
Q.O.D.
53. Changing a subscript when balancing an
equation
A. is the correct way to change the number of
atoms of an element
B. would change the chemical make up of the
compound
C. cannot result in the same number of each
kind of atom on both the reactant and
product side
D. is the only way to satisfy conservation of
atoms
SPS2
Q.O.D.
59.On a 10-speed bicycle, gears increase the
mechanical advantage of the bicycle. In which
of the following situations would you want the
greatest mechanical advantage for the gear
system?
A. Climbing up a hill
B. Coasting down a hill
C. Riding on level ground
D. Stopping suddenly to avoid a crash
SPS8
Q.O.D.
66. The diagram illustrating two waves in phase
is:
A.
B.
C.
D.
A.
B.
A.
C.
B.
D.
a.
C.
.