Chemistry, 05.11.2020 04:40 dogsarecrazy7868
Question 1
If a solution contains 0.5 grams of NaCl and 100 grams of water, NaCl is the solute and water is the solvent.
A) True
B) False
Question 2
In a solution, the solute is the substance in the smaller amount.
A) True
B) False
Question 3
In a solution, the solvent is present in the larger amount.
A) True
B) False
Question 4
A solution is saturated when it contains the maximum amount of solute for the given solvent.
A) True
B) False
Question 5
Stirring a solution
A) increases the rate at which solute and solvent particles contact each other
B) makes more surface area available for the solvent to dissolve
C) prevents all the solute from being dissolved by the solvent
Question 6
Increasing the temperature of a solution will enable you to
A) dissolve more solute
B) remove the solvent
C) increase the surface area
Question 7
Which of the following is the best definition of a mixture?
A) compound of more than two types of elements
B) combination of two or more substances
C) a type of solid dissolved in a liquid
Answers: 2
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1)each group 16 element has how many valence electrons? ( )4 ( )6 ( )8 ( )16 2)how many dots appear in the dot structure for calcium ion, ca2+? ( )zero ( )one ( )two ( )eight 3) which of the following atoms forms a cation to obtain an octet of outer shell electrons? ( )magnesium ( )oxygen ( )fluorine ( )helium 4) an al3+ ion contains 13 protons and 10 electrons. ( )true ( )false 5) valence and non-valence electrons are represented in lewis dot structures. ( )true ( )false
Answers: 3
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Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds
Answers: 2
Question 1
If a solution contains 0.5 grams of NaCl and 100 grams of water, NaCl is the solute and...
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