Unit 8 - Chemical Compound Review

25 Questions | By Haszshe | Updated: Mar 21, 2022 | Attempts: 109

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We have just finished covering unit 8 in class today. The simple quiz below is set to help you review what you understood about chemical compounds, their formation, appearance and reaction. Give it a go and share your scores in the comment section. Best of luck as you tackle it.

Questions and Answers

1.

A _____ is a large moelcule made of carbon and hydrogen atoms.
- A.
  
  Hydrocarbon
- B.
  
  Solute
- C.
  
  Hydrogen oxide
- D.
  
  Solvent
2.

Adding a solute to a solvent _____ the freezing point of a solvent.
- A.
  
  Lowers
- B.
  
  Raises
- C.
  
  Does not change
- D.
  
  Doubles
3.

Air contains 78 percent nitrogen, 21 percent oxygen, and one percent argon. Which gas is the solvent?
- A.
  
  Argon
- B.
  
  None of the answers are correct
- C.
  
  Nitrogen
- D.
  
  Oxygen
4.

What characteristic of water makes it the universal solvent?
- A.
  
  Nonpolar
- B.
  
  Large molecules
- C.
  
  Long-chain hydrocarbon
- D.
  
  Polar
5.

Why is it dangerous to take large doses of some nonpolar vitamins?
- A.
  
  They are water soluble and become concentrated in body tissues.
- B.
  
  These substances cannot be utilized by the body.
- C.
  
  They are fat soluble and accumulate in body tissues.
- D.
  
  They cannot dissolve in fat and instead dissolve in the water inside body cells.
6.

Gases are _____ in cooler solvents.
- A.
  
  Insoluble
- B.
  
  Less soluble
- C.
  
  More soluble
- D.
  
  Precipitates
7.

Which attributes enables water molecules to dissolve sugar?
- A.
  
  Nonpolarity of water
- B.
  
  Liquid state of the solute
- C.
  
  Stationary nature of water molecules
- D.
  
  Electrical charge
8.

Sterling silver contains 92.5 percent silver and 7.5 percent copper. Which substance is the solute?
- A.
  
  Solids do not form solutions
- B.
  
  Platinum
- C.
  
  Silver
- D.
  
  Copper
9.

Because electrons are distributed equally, a hydrocarbon is ____.
- A.
  
  Insoluble
- B.
  
  Nonpolar
- C.
  
  Polar
- D.
  
  Nontoxic
10.

Vitamin C is a(n) _____ compound and dissolves readily in water.
- A.
  
  Polar
- B.
  
  Oily
- C.
  
  Nonpolar
- D.
  
  Fat soluble
11.

Which of the following statements is true?
- A.
  
  Nonpolar solvents are useful for dissolving polar solutes.
- B.
  
  Polar solvents are useful for dissolving nonpolar solutes.
- C.
  
  Nonpolar solvents are not useful because they do not form solutions with water.
- D.
  
  Nonpolar solvents are useful for dissolving nonpolar solutes.
12.

Which of the following is the most precise term?
- A.
  
  Supersweet
- B.
  
  Dilute
- C.
  
  40 percent juice by volume
- D.
  
  Concentrated
13.

Which of the following increases rate of evaporation?
- A.
  
  Decreasing surrounding temperature
- B.
  
  Increasing attraction between solvent moelcules
- C.
  
  Combining polar solvents with polar solutes
- D.
  
  Decreasing attraction between solvent molcules
14.

The process in which water molecules draws ions away from a crystalline solid and into solution is _____.
- A.
  
  Supersaturation
- B.
  
  Nonpolarization
- C.
  
  Concentration
- D.
  
  Dissociation
15.

Which of the actions increases the rate of dissolving?
- A.
  
  Stirring the solution
- B.
  
  Decreasing the pressure
- C.
  
  Using larger-sized crystals
- D.
  
  Decreasing the temperature
16.

A mixture that appears to have the same composition, color, and density and is mixed at the molecular level is called a(n) ____.
- A.
  
  Element
- B.
  
  Suspension
- C.
  
  Solution
- D.
  
  Heterogenous mixture
17.

_____ is the maximum amount of a solute that can be dissolved in a given amount of solvent at a given temperature.
- A.
  
  Polarity
- B.
  
  Concentration
- C.
  
  Supersaturation
- D.
  
  Solubility
18.

A solution that contains all the solute it can hold at a given temperature is _____.
- A.
  
  Unsaturated
- B.
  
  Supersaturated
- C.
  
  Soluble
- D.
  
  Saturated
19.

____ are compounds that form charged particles.
- A.
  
  Nonpolar components
- B.
  
  Ions
- C.
  
  Electrolytes
- D.
  
  Nonelectrolytes
20.

Which of the following is a solution?
- A.
  
  Muddy water
- B.
  
  Chlorine
- C.
  
  Milk
- D.
  
  Salt water