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Modeling Matter Unit 2 Chapter 2 Test review Flashcards | StudBud
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Modeling Matter Unit 2 Chapter 2 Test review
Modeling Matter Unit 2 Chapter 2 Test review
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Answers
1
A solid that can dissolve in a liquid is considered __.
soluble
a substance
insoluble
chemically unresponsive
2
Some solids dissolve in water, and others do not.
false
true
3
Once a solid has dissolved into a liquid, the solid can�t ever be removed.
FALSE
TRUE
4
When the molecules of a solid aren�t attracted to the molecules of a liquid, they stay clustered together as a solid
TRUE
FALSE
5
To use evidence as well as your own knowledge to create a new understanding.
predict
explain
infer
analyze
6
John mixes sugar into water and after observing claims that the sugar disappeared. Which of the following is true?
his claim is invalid. The particles did not vanish. they dissolved in water
his claim is valid. The changed and are no longer sugar
His claim is invalid. The particles did not vanish it became a gas
His claim is valid. The particles no longer exist.
7
When I drag the object on paper, it leaves marks on the paper.
observation
inference
8
If a substance dissolves in water, the molecules are NOT soluble.
true
false
9
The object is shorter than a 12 inch ruler.
observation
inference
10
Stirring a mixture of a solid and a liquid helps the solid dissolve
TRUE
FALSE
11
The object is white.
observation
inference
12
When the molecules of a solid aren't attracted to the molecules of a liquid,
they spread apart and mix together evenly.
they stay clustered together as a solid.
13
All solids will dissolve when mixed with a liquid.
TRUE
FALSE
14
To mix evenly into a liquid by breaking into pieces that are too small to see.
solubility
dissolve
soluble
evaporate
15
to pull on an object, even without touching it
property
attract
molecule
16
__ means to mix a solid evenly into a liquid by breaking it apart into pieces that are too small to see.
emulsify
infer
dissolve
sediment
17
Which of the following statements explains why cumin and pepper were not used in the final salad dressing recipe?
Even though cumin and pepper dissolve in vinegar
Cumin and pepper don't dissolve in vinegar so they end up as sediment
Since cumin and pepper dissolve quickly in vinegar, they disappear
Cumin and pepper don't dissolve in vinegar, they start to act as emulsifier
18
The girl is sad.
inference
observation
19
information that supports an answer to a question
observation
evidence
inference
20
If a substance is soluble, then�
it can only dissolve in water.
it can only dissolve in a gas.
it must be an emulsifier.
it can dissolve in water or another liquid.
