Tcap Review #2 Question Preview (ID: 25034)
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The mass of 5 cubic centimeters of aluminum is 13.5 grams. Density = Mass/Volume
a) 2.7 grams per cubic centimeter
b) 8.5 grams per cubic centimeter
c) 13.5 grams per cubic centimeter
d) 18.5 grams per cubic centimeter
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) resistor
b) light bulb
c) battery
d) wire coil
What do a cloud, an egg, a tree, and a shark have in common?
a) They are all organisms
b) They are all made of atoms
c) They all belong in an ocean ecosystem
d) They all have the same physical properties
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) magnetic fields
b) physical changes
c) chemical changes
d) experimental procedures
Which of these causes a chemical change in matter?
a) freezing
b) chopping
c) burning
d) melting
Which substance is made of molecules that move slowly and are tightly packed together in a six-sided geometric structure?
a) carbon dioxide
b) liquid water
c) quartz crystal
d) vegetable oil
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 to lose the particles inside their atoms.
c) The water molecules began chemically changing to a new substance.
d) The water molecules began physically changing to another phase.
Which of these symbols represents a substance that is classified as an element?
a) Mg
b) KF
c) NH3
d) SiO2
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 produce fragrant flowers that could be used to improve the attractiveness of beauty products.
b) Wild grass species may contain undiscovered compounds that could be used in medicines to treat deadly diseases.
c) Wild grass species could be used to develop new food grains if hybridized grain crops disappear due to disease or pestilence.
d) Wild grass species contain genetic material that could be used in agricultural engineering to improve the characteristics of
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 reactants are very light gases.
d) Both sides of the equation have different numbers and types of atoms.
Which factor least affects the size and shape of Earth’s orbit around the Sun?
a) the mass of Earth
b) the mass of the Sun
c) the temperature of Sun
d) the distance between Earth and the Sun
Which of the following describes a process that results in a mixture?
a) the solution of sodium chloride in water
b) the combustion of carbon and oxygen
c) the oxidation of iron
d) the neutralization of sodium
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) Weight is the amount of matter in an object, and mass is the amount of gravitational attraction an object has
d) Mass is the amount of matter in an object, and weight is the amount of gravitational attraction an object has.
Which gas makes up about 20% of Earth’s atmosphere?
a) nitrogen
b) carbon dioxide
c) oxygen
d) helium
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 length of the nail
d) the shape of the nail
Which of these determines the amount of gravitational attraction between two massive objects?
a) shape of the objects
b) volume of the objects
c) temperature difference of the objects
d) distance between the objects
How would a decrease in the Sun’s gravitational pull affect Earth?
a) Earth’s orbit would be closer to the Sun, causing an increase in temperature.
b) Earth’s orbit would be closer to the Sun, causing a decrease in temperature.
c) Earth’s orbit would be farther away from the Sun, causing an increase in temperature.
d) Earth’s orbit would be farther away from the Sun, causing a decrease in temperature.
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 decreased during the reaction.
b) The mass of the substances involved in a chemical reaction is increased during the reaction.
c) The mass of the substances involved in a chemical reaction is maintained during the reaction.
d) The mass of the substances involved in a chemical reaction is destroyed during the reaction.
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 pollutants will enter the environment.
b) More carbon dioxide will be naturally absorbed in the area.
c) Less oxygen will be naturally produced in the area.
d) More wildlife will move into the area.
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) rainforest
c) grassland
d) desert
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