Name:__________________
Science 7 - Solutions Take HomeQuiz #1
Section 1 - Multiple Choice
1. A solution is a type of mixture. A mixture is ...
A.
B.
a pure substance
two or more substances mixed together
2. Mixtures can be classified into 2 types, homogeneous and
heterogenous. They are different because:
A.
B.
C.
D.
heterogeneous has 2 substances while homogenous has 3 or more substances
homogeneous looks the same throughout, with heterogeneous you can see the different
parts
heterogeneous looks the same throughout, with homogeneous you can see the different
parts
they are the same, just different names
3. Solutions are:
A.
B.
C.
homogeneous
heterogeneous
neither homogeneous or heterogeneous
4. To separate a mixture of water and iron it is easiest to use
A.
B.
C.
D.
floating
picking them out
a magnet
filter with filter paper
5. Solutions are made of at least 2 parts called
A.
B.
C.
D.
solution and solute
solute and solvent
solvent and saline
solution and solvent
6. I'm making soup for lunch. Which would be faster to dissolve, rock salt or regular table salt?
A.
B.
rock salt
table salt
7. What else can I do to make the salt in my soup
dissolve faster?
A.
B.
C.
D.
add a lot of table salt
use less liquid
add heat
let it sit
8. Which of the following are homogeneous
mixtures?
A.
B.
C.
D.
water
rocky road ice cream
shampoo
oatmeal
9. Sugar dissolves in water because it is...
A) insoluble
B) saturated
C) solid
D) soluble
Section 2 - Match the definition to the correct term
10.
_____ Saturated
a. a substance that is dissolved in another
_____ Unsaturated
b. a solution that contains the maximum
amount of solute possible
_____ Solute
c. A substance that dissolves another
_____ Solvent
d. A solution that contains more than the
maximum amount of solute possible
_____ Supersaturated
e. A solution that contains less than the
maximum amount of solute possible
Section 3:Solubility Graph
Directions: Use the solubility graph below to answer the questions
o
<===
!
11. How many grams of Sodium Chloride dissolve at 15°? __________________
12. At what degree does 100 grams of Potassium Nitrate dissolve?
___________________
13.
At what degree do Potassium Nitrate and Sodium Chloride have equal
solubilities? _______________
14. Which substance is the least soluble at 75°? ______________________
15.
A small circle has been placed on the left hand side of the graph below the
potassium nitrate. If a solution was made with that amount of solute (130g)
and at that temperature (90°C) would it be saturated supersaturated or
unsaturated?