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Total questions: 15
Worksheet time: 22mins
Solute
Salt
Suspension
Solvent
lower the concentration of solute per solvent
increase the concentration of solute per solvent
What happens when NaCl(s) is dissolved in water?
Cl- ions are attracted to the oxygen atoms of the water.
Cl- ions are attracted to the hydrogen atoms of the water.
Na+ ions are attracted to the hydrogen atoms of the water.
No attraction involved, the crystal falls apart.
A mixture consists of sand and salt water. Which can be used to separate the sand, salt and water from each other?
Filter out the sand, then evaporate the water.
Filter out the salt, then evaporate the water.
Evaporate the water, then filter out the salt.
Evaporate the water, then filter out the sand.
A mixture of alcohol and water can be separated by which process because they have different boiling points?
filtration
chromatography
evaporation
distillation
Which compounds solubility decreases most rapidly as the temperature changes from 10C to 70C?
NH4Cl
NH3
HCl
KCl
How many grams of KCl must be dissolved in 200g of water to make a saturated solution at 60C?
30g
45g
56g
90g
According to Table F, which ions combine with chloride ions to form an insoluble compound?
Fe
Ca
Ag
Li
What is the molarity of an H2SO4 solution if 0.25L of the solution contain 0.75 moles of H2SO4?
0.33M
0.75M
3.0M
6.0M
How many grams of H2SO4 are needed to make a 2M solution in 500mL?
46g
98g
144g
196g
What is the concentration of a solution that contains 0.025g of salt in 2500.00g of water?
0.1 ppm
1.0 ppm
10.0 ppm
100.0 ppm
What occurs as a salt dissolves in water?
The number of ions in the solution decreases and the freezing point decreases.
The number of ions in the solution decreases and the freezing point increases.
The number of ions in the solution increases and the freezing point decreases.
The number of ions in the solution increases and the freezing point increases.
Which of the following will have the highest boiling point?
1.0M CaCl2
1.0M NaCl
2.0M NaCl
2.0M CaCl2
