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Matter
Test Description: Phase Changes, Mixtures and Solutions
Instructions: Answer all questions to get your test result.
1) The temperature of ice water will remain (near) _______until all of the ice has melted.
A
0 degrees Celsius
B
125 degrees Celsius
C
100 degrees Celsius
D
50 degrees Celsius
2) Water has a characteristic boiling point of ______.
A
100 degrees Celsius
B
125 degrees Celsius
C
50 degrees Celsius
D
0 degrees Celsius
3) When you mix salt or sugar with water, it does not vanish. Instead, it ______ and forms a solution.
A
multiplies
B
condensates
C
dissolves
D
evaporates
4) When dropping antacid tablets into a glass of water, the tablets don't vanish, they _______.
A
float to the top
B
settle at the bottom and stay there
C
duplicate themselves until the glass is full
D
dissolve and mix evenly with the water
5) When you drop antacid tablets into water, the fizzing and bubbling is a clue that _____.
A
a gas was created during the CHEMICAL change.
B
more liquid was created.
C
the water is evaporating.
D
a gas was created during the PHYSICAL change.
6) The mass of a sugar cube and glass of water before and after dissolving the sugar cube in the water _____.
A
would go down.
B
would be different.
C
would go up.
D
would stay the same.
7) Mixing vinegar and baking soda creates a chemical reaction that produces carbon dioxide which is _______.
A
a mixture
B
a new substance
C
a liquid
D
a solid
8) The Law of Conservation of Mass states that the
A
mass of objects is constantly changing.
B
mass of objects never changes. The parts just rearrange.
C
mass of objects goes up when matter changes states.
D
mass of objects goes down when matter changes states.
9) In studying the effect of temperature on dissolving sugar, equal amounts of sugar must be used, _______.
A
so that you have multiple independent variables.
B
so the test is fair and only 1 thing (the temp) is changed.
C
so that it will change states.
D
so that it will dissolve.
10) Which is true about temperature and the rate of dissolving?
A
Temperature has no affect on the rate of dissolving.
B
Matter can only dissolve if the temperature of the solvent is over 100 degrees Celsius.
C
The lower the temperature, the faster the rate of dissolving
D
The higher the temperature, the faster the rate of dissolving.
11) Which of these is true about the rate of dissolving?
A
Stirring has no affect on dissolving.
B
Stirring always creates a new substance.
C
Stirring decreases the rate of dissolving.
D
Stirring increases the rate of dissolving.
12) A solid will dissolve in a liquid faster if the particles of the solid are _______.
A
a color
B
heavy
C
smaller
D
larger
13) When you mix sugar with water, does it create a mixture or a new compound?
A
both
B
neither
C
a new compound
D
a mixture
14) When you mix vinegar with baking soda, what does it form?
A
a new compound
B
neither
C
a mixture
D
both
15) In a ________, the result still consists of the original substance.
A
solid
B
mixture
C
liquid
D
new compound
16) When 2 substances are mixed to make a a new substance, the result is called a
A
solid
B
solution
C
compound
D
mixture
17) What is formed when you dissolve one substance (the solute) into another substance (the solvent), and they mix evenly and appear to be one, even though they can indeed be separated back out?
A
a cell
B
a compound
C
a molecutle
D
a solution
*select an answer for all questions
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