HChem Unit 8 Test Review

Quiz
•
Chemistry
•
10th Grade
•
Medium
+1
Standards-aligned
Ashlyn Phelps
Used 14+ times
FREE Resource
28 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
About how many grams of water would be needed to dissolve 20 g of potassium chlorate at 30 degrees Celsius.
5 g
10 g
20 g
100 g
200 g
Answer explanation
At 30 degrees Celsius, 10 g can be dissolved in 100 g of water.
Tags
NGSS.HS-ESS2-5
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
unsaturated
saturated
supersaturated
none of these
Answer explanation
Density of water is 1 g/mL. 55 mL = 55 g. Solve the proportion for amount of solute compared to 100 g of water.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
You have a saturated solution of KCl at 40 degrees Celsius. What is the percent by mass of KCl in the solution?
40%
18%
62%
29%
Tags
NGSS.HS-PS1-5
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Based on the table, which of the following statements is correct?
Solids generally become less soluble in water as temperature increases
Temperature generally has no effect on the solubility of solids in water
Solids generally become more soluble in water as temperature increases
Tags
NGSS.MS-PS1-4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
25.0
111
55.6
27.8
0.113
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In general, a solid becomes more soluble in water at
high temperature and low pressure
low temperature and high pressure
high temperature and high pressure
low temperature only, solubility of solids are not affected by pressure
high temperature only, solubility of solids are not affected by pressure
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If 25 mL of 0.15 M solution of HCl is added to 45 mL of 0.25 M solution of HCl, what would be the molarity of the final mixture?
0.15 M
0.20 M
0.21 M
0.23 M
0.25 M
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