Organic Chemistry Question Papers

Improved Essays
Research Instrument

Multiple Choice
Identify the choice that best completes the statement or answers the question.

____ 1. Which of these is true of an ice cube?
A It is made of vibrating, closely packed tiny particles.
B It is made of clumps of particles that glide past each other.
C It is made of particles that spread out evenly to fill the container they are in.
D It is made of tiny particles that are far apart from each other.

____ 2. Which idea below describes the atomic theory?
A Atoms make up compounds.
B Atoms can be rearranged to form new elements.
C Most atoms are metals.
D Everything is made up of tiny particles called atoms.

____ 3. Diamonds and graphite are both made of carbon atoms. Why do they have different properties?
…show more content…
____ 13. Look at the four containers below.

A B
C D

Which drawing shows what happens to the particles in water when the temperature of the water reaches 100°C?
A The particles stay close together.
B The particles continue to glide past each other.
C The particles move far apart.
D The particles are destroyed.

____ 14. The melting point of water is 0°C. Its boiling point is 100°C. The thermometers show the temperature of four samples of water. Which statement is true?
A Only sample B is solid.
B All four samples are liquid.
C Only samples A and C are liquid.
D None of these

____ 15. Hailey is investigating changes in the states of matter. Wearing safety gloves and goggles, she is heating a pan of water on a hot plate. She observes water vapor beginning to rise from the surface of the water. As the water reaches 95°C, what can Hailey expect to observe soon?
A Drops of water dripping down the outside of the pan
B Bubbles of gas forming in the water
C The particles of water vibrating in place within the pan
D The particles of water moving together into a definite shape

____ 16. When you pull up on the handle of a bicycle pump, it takes particles of air into its cylinder. When you press down on the handle, it presses the air particles closer together, as shown
…show more content…
But, a note on the bicycle pump says that it works only on gases, not on solids or liquids. Why does the bicycle pump work only on gases?
A Only gases can change shape.
B Only gases have definite shape.
C Only gases can change volume.
D Only gases have definite volume.

____ 17. Which diagram illustrates how the arrangement of water particles changes as heat is added to liquid water at 100°C?

A
B
C
D

____ 18. Which statement best describes water at 30°C?
A It is a gas without a definite shape.
B It is a solid with a definite shape and volume.
C It is a liquid with a definite shape.
D It is a liquid with a definite volume.

____ 19. What are the freezing and melting points of water on the Celsius scale?
A 100°C and 0°C
B 0°C and 100°C
C 0°C.
D 100°C

____ 20. What are the physical states of matter for helium, diamonds, and rubbing alcohol?
A Gas, liquid,

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