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Tcap Review #2
Test Description: Review Material for Tcap
Instructions: Answer all questions to get your test result.
1) The mass of 5 cubic centimeters of aluminum is 13.5 grams. Density = Mass/Volume
A
8.5 grams per cubic centimeter
B
13.5 grams per cubic centimeter
C
2.7 grams per cubic centimeter
D
18.5 grams per cubic centimeter
2) Mr. Parsons is helping his science class build a device that will produce electricity with a rotating magnet. What else must be included in the device in order for it to produce electricity?
A
battery
B
wire coil
C
light bulb
D
resistor
3) What do a cloud, an egg, a tree, and a shark have in common?
A
They are all made of atoms
B
They all have the same physical properties
C
They all belong in an ocean ecosystem
D
They are all organisms
4) Celia combined baking soda and vinegar in a beaker. The production of new substances, as described in this example, is the common outcome of all __________.
A
experimental procedures
B
physical changes
C
chemical changes
D
magnetic fields
5) Which of these causes a chemical change in matter?
A
melting
B
chopping
C
freezing
D
burning
6) Which substance is made of molecules that move slowly and are tightly packed together in a six-sided geometric structure?
A
liquid water
B
carbon dioxide
C
quartz crystal
D
vegetable oil
7) Heat was applied to 500 milliliters of water until the temperature of the water reached 100 °C. What change happened to the water when it reached 100 °C?
A
The water molecules began to separate into free hydrogen and oxygen.
B
The water molecules began chemically changing to a new substance.
C
The water molecules began physically changing to another phase.
D
The water molecules began to lose the particles inside their atoms.
8) Which of these symbols represents a substance that is classified as an element?
A
SiO2
B
KF
C
Mg
D
NH3
9) Some conservationists believe it is very important to preserve habitats containing wild grass species because these grasses could save human lives in the future. Which of the following is not a way that wild grass species could save human lives?
A
Wild grass species could be used to develop new food grains if hybridized grain crops disappear due to disease or pestilence.
B
Wild grass species may contain undiscovered compounds that could be used in medicines to treat deadly diseases.
C
Wild grass species contain genetic material that could be used in agricultural engineering to improve the characteristics of
D
Wild grass species produce fragrant flowers that could be used to improve the attractiveness of beauty products.
10) When silver metal is added to hydrogen sulfide, the atoms react to form silver sulfide and hydrogen gas, as shown in the equation below. 2Ag + H2S → Ag2S + H2 Which statement is true about the mass of the reactants and the mass of the products?
A
Both sides of the equation have the same number and types of atoms.
B
Both products are heavy metals.
C
Both sides of the equation have different numbers and types of atoms.
D
Both reactants are very light gases.
11) Which factor least affects the size and shape of Earth’s orbit around the Sun?
A
the temperature of Sun
B
the distance between Earth and the Sun
C
the mass of Earth
D
the mass of the Sun
12) Which of the following describes a process that results in a mixture?
A
the oxidation of iron
B
the neutralization of sodium
C
the solution of sodium chloride in water
D
the combustion of carbon and oxygen
13) Mass and weight are both properties of matter that can be measured in metric units. How is mass different from weight?
A
Weight is the length, width, and height of an object, and mass is the density of an object.
B
Mass is the length, width, and height of an object, and weight is the density of an object.
C
Mass is the amount of matter in an object, and weight is the amount of gravitational attraction an object has.
D
Weight is the amount of matter in an object, and mass is the amount of gravitational attraction an object has
14) Which gas makes up about 20% of Earth’s atmosphere?
A
oxygen
B
carbon dioxide
C
nitrogen
D
helium
15) A copper wire coiled around an iron nail can be made into an electromagnet by connecting the ends of the wire to each end of a size D battery. What determines the strength of this electromagnet?
A
the length of the wire
B
the number of coils in the wire
C
the shape of the nail
D
the length of the nail
16) Which of these determines the amount of gravitational attraction between two massive objects?
A
temperature difference of the objects
B
distance between the objects
C
shape of the objects
D
volume of the objects
17) How would a decrease in the Sun’s gravitational pull affect Earth?
A
Earth’s orbit would be farther away from the Sun, causing an increase in temperature.
B
Earth’s orbit would be farther away from the Sun, causing a decrease in temperature.
C
Earth’s orbit would be closer to the Sun, causing a decrease in temperature.
D
Earth’s orbit would be closer to the Sun, causing an increase in temperature.
18) Mario performed a science project in which he tested the validity of the Law of Conservation of Mass. If Mario performed his experiment without error, which of the following conclusions did he make?
A
The mass of the substances involved in a chemical reaction is destroyed during the reaction.
B
The mass of the substances involved in a chemical reaction is maintained during the reaction.
C
The mass of the substances involved in a chemical reaction is increased during the reaction.
D
The mass of the substances involved in a chemical reaction is decreased during the reaction.
19) In order to make room for a new chemical research laboratory, a wide area of forest land was cleared away. Which impact will this most likely have?
A
Less oxygen will be naturally produced in the area.
B
More wildlife will move into the area.
C
Less pollutants will enter the environment.
D
More carbon dioxide will be naturally absorbed in the area.
20) An organism has a thick stalk and the ability to store a lot of water. In which biome does the organism most likely live?
A
tundra
B
desert
C
rainforest
D
grassland
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