WorksheetsMidterm Test Review!
Total questions: 34
Worksheet time: 17mins
Name
Class
Date
1.
1. What type of properties are dependent upon the number of particles in a solution?
a)
chemical
b)
physical
c)
colligative
d)
superlative
2.
3. Which part of the solution is water in an aqueous solution?
a)
solute
b)
solvent
3.
4. What is a precipitate in chemistry?
a)
The water that falls when it rains
b)
The solid that falls to the bottom in a supersaturated solution
c)
A prediction about what will happen in an experiment
4.
6. Could you add more sugar to an unsaturated Kool Aid solution?
a)
Yes
b)
No
5.
7. What kind of chemical reaction produces heat?
a)
chemical
b)
physical
c)
endothermic
d)
exothermic
6.
8. In the following chemical reaction, how many moles of oxygen are needed to produce 10 moles of water?
2H2 + O2 --> 2H2O
2H2 + O2 --> 2H2O
a)
1
b)
2
c)
5
d)
10
7.
9. If salt is added to water, the electrical conductivity of the water will
a)
increase
b)
decrease
c)
stay the same
8.
10. Which factor does NOT increase the solubility of a solid?
a)
stirring it
b)
cooling it
c)
heating it
d)
increasing the surface area
9.
11. The process of surrounding solute particles with solvent particles is
a)
solubility
b)
solvation
c)
mixing
d)
miscibility
10.
12. As solute is added to a solution, what happens to the boiling point?
a)
It increases
b)
It decreases
c)
There is no change
11.
12. As solute is added to a solution, what happens to the freezing point?
a)
It increases
b)
It decreases
c)
It doesn't change
12.
13. What is the solute in a sugar water solution?
a)
sugar
b)
water
c)
neither
13.
14. If water and alcohol are MISCIBLE, which of the following are IMMISCIBLE?
a)
alcohol and water
b)
alcohol and oil
c)
alcohol and salt
14.
14. What does it mean to be immiscible?
a)
Can't be heated
b)
Can't be mixed
c)
Can't be seen
d)
Can't be tasted
15.
17. What will polar solvents dissolve?
a)
polar solutes
b)
nonpolar solutes
16.
18. According to the graph on your review sheet, 50 g of KNO3 dissolved in 100 g of water at 20oC would be
a)
saturated
b)
unsaturated
c)
supersaturated
17.
19. According to the graph on your review sheet, at what temperature will 30g of KClO3 form a saturated solution in 100g of water?
a)
10oC
b)
30oC
c)
50oC
d)
70oC
18.
25. Which is Avogadro's number?
a)
6 x 1022
b)
6.23 x 1022
c)
6.022 x 1023
19.
28. What do the coefficients in a chemical equation represent?
a)
The number of grams of the element
b)
The number of elements present
c)
The relative numbers of elements present
20.
31. The smaller numbers use to write a chemical formula are called (ex. The 2 in MgCl2)
a)
Superscripts
b)
Coefficients
c)
Subscripts
d)
Exponents
21.
34. A substance made in a chemical reaction is called
a)
reactant
b)
product
22.
35. Which is the proper unit for mass?
a)
g
b)
lb
c)
m
d)
M
23.
35. Which is the proper unit for molar mass?
a)
g
b)
L
c)
m
d)
g/mol
24.
35. Which is the proper unit for volume?
a)
g
b)
g/mol
c)
L
d)
M
25.
35. Which is the proper unit for molarity?
a)
m
b)
M
c)
g
d)
g/mol
26.
40. H2O2
a)
Empirical formula
b)
Molecular formula
27.
40. H2O
a)
empirical formula
b)
molecular formula
28.
40. C6H12O6
a)
empirical formula
b)
molecular formula
29.
40. CH2O
a)
empirical formula
b)
molecular formula
30.
41. How does the total mass of the reactants compare to the total mass of the products in a chemical reaction?
a)
Reactants have more mass
b)
Products have more mass
c)
Products and reactants have the same mass
31.
46. Identify the following compound: NaCl
a)
ionic
b)
covalent
32.
46. Identify the following compound: HCl
a)
ionic
b)
covalent
33.
46. Identify the following compound: CO
a)
ionic
b)
covalent
34.
46. Identify the following compound: H2O
a)
ionic
b)
covalent
100 %
