Biology Forums - Study Force

Matter is defined as:
 
  A) Physical objects that can be seen.
  B) Physical objects that emit energy.
  C) Anything that has weight, can be seen, and emits energy.
  D) Anything that has mass and takes up space.

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[Ques. 2] If a gas with a specific gravity of 1.3 is released in a room, will it be more likely to be found near the ceiling or near the floor?
 
  A) The specific gravity of a gas does not affect its position in a room relative to other gases.
  B) Near the floor because its specific gravity is greater than 1.
  C) Near the ceiling because its specific gravity is greater than 1.
  D) It would be found at both the ceiling and the floor because a gas with a high specific gravity would fill up the room.

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[Ques. 3] What is the relationship between atoms and molecules?
 
  A) Molecules are made up of atoms. B) They are both weightless.
  C) They are two words for the same thing. D) Atoms are made up of molecules.

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[Ques. 4] Freezer burn occurs when water slowly exits perishable foods during the freezing process. This process is known as: (SERVICE TIP)
 
  A) Deposition. B) Sublimation.
  C) Latent change of state. D) Deterioration.

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[Ques. 5] A vapor that changes into a solid while bypassing the liquid state is known as:
 
  A) Deposition. B) Critical pressure.
  C) Critical mass. D) Critical temperature.

1)  D

2)  B

3)  A

4)  B

5)  A

Cheers!!

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