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Daily Concept Quiz
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1

Candle wax at room temperature is an example of
A)an ionic solid.
B)a covalent solid.
C)a metallic solid.
D)an amorphous solid.
E)a molecular solid.
2

When potassium donates an electron to chlorine to form potassium chloride, what kind of crystalline solid forms?
A)an ionic solid.
B)a covalent solid.
C)a metallic solid.
D)an amorphous solid.
E)a molecular solid.
3

Purely covalent solids are formed from
A)inert gases.
B)elements on the boundary between metals and nonmetals.
C)alkalis.
D)halogens.
4

The outer electrons from atoms in a metal crystalline structure are responsible for which of the following properties of metals?
A)Electrical conductivity
B)Thermal conductivity
C)Shiny luster
D)Opacity to light
E)All of these
5

Plastic food storage wrap "sticks" to a glass bowl because of
A)the electron sea in the wrap.
B)the electron sea in the bowl.
C)the polar molecules in the bowl.
D)the polar molecules in the wrap.
E)ionic bonding.
6

The solubility of a liquid depends on
A)the amount of solvent.
B)the amount of solute.
C)the temperature of the solvent.
D)all the above.
E)none of the above.
7

In contrast to pure water, salted water will
A)freeze at a higher temperature and boil at a lower temperature.
B)freeze at a lower temperature and boil at a lower temperature.
C)freeze at a higher temperature and boil at a higher temperature.
D)freeze at a lower temperature and boil at a higher temperature.
8

You decide to make a decorative ornament by suspending small, multicolored sparkles in water. You find, however, that after you put the sparkles in water, they all dissolve. What error did you make?
A)The molecules of the sparkles were polar.
B)The molecules of the sparkles were nonpolar.
C)You needed more sparkles.
D)You needed less sparkles.
9

In which of the following types of water is it easier to dissolve minerals?
A)Hard water
B)Soft water
C)Hard and soft water dissolve minerals equally
D)A mixture of hard and soft water
10

If a liquid conducts electricity, you know that
A)the liquid must be an acid.
B)the liquid must be a base.
C)the liquid must contain ions.
D)the liquid must contain covalent molecules.
11

Solution A has a pH of 3. Solution B has a pH of 6. Which statement is correct?
A)Solution B is twice as acidic as solution A.
B)Solution B is 1000 times as acidic as solution B.
C)Solution A is twice as acidic as solution B.
D)Solution A is 1000 times as acidic as solution B.





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