QUIZ
Unit 1 Chemistry Test Review
3 years ago by
20 questions
Q.

What vocabulary term is being described: Unique characteristic that helps identify a substance.

answer choices

matter

substance

property

product

Q.

When calculating _____ you are determining the mass in a set volume of a substance.

answer choices

melting point

solubility

weight

density

Q.

_________ is when on substance is able to dissolve in another.

answer choices

phase change

substance

density

solubility

Q.

A ____ is made of 2 or more substances that DO NOT chemically combine.

answer choices

molecule

mixture

substance

property

Q.

Something is considered a ________ when it is made of one type of material all the way through. An example could be water, chalk, vinegar, or copper.

answer choices

molecule

chemical

substance

solvent

Q.

If you heat 1 tablespoon and 1 stick of butter, the amount of butter is different, but the ______________, or the temperature at which both samples of butter will begin to change to a liquid will remain the same.

answer choices

freezing point

physical change

chemical change

melting point

Q.

Ice can change from a solid (ice) to liquid (water) to gas (water vapor). What vocabulary term does this describe?

answer choices

chemical reaction

phase change

melting point

boiling point

Q.

According to scientific principle #6 properties (denstiy, hardness, melting point, solubility) of a substance will:

answer choices

change because it isn't possible to stay the same if the amount changes

stay the same ONLY if the amount of the substance is the same

stay the same, even if the amount of the substance is different

change based on the amount of the substance present

Q.

Scientific principle #6 states: properties of a given substance are the same regardless of the amount of the substance. Based on this scientific principle, which options below will not change if the amount of a substance is increased?

answer choices

melting point of the substance

volume of the substance

mass of the substance

density of the object

solubility of the substance

Q.

A phase change IS NOT a chemical reaction. Choose the options that support this claim. You may choose more than one.

answer choices

The substance are mixed together and keep their properties

The atoms making up the molecules are rearranged creating new substances

The atoms and molecules are mixed together BUT do not create new molecules

The atoms are rearranged creating a new product with a different arrangement of atoms

Q.

When a substance goes through a phase change ___.

answer choices

molecules are rearranged in some of the substances

molecules rearrange making new substances

a chemical reaction occurs

the atoms making up molecules are not rearranged

Q.

When 2 or more substances are mixed together and the resulting substances properties HAVE NOT changed a chemical reaction has occurred.

answer choices

True

False

Maybe

Q.

Mixing kool-aid powder and water together makes a new substance.

answer choices

True

False

Q.

How can we determine if 2 unknown substances are the same or different substance?

answer choices

observe the size of each substance

observe the shape of the substances

test properties of the substances

make a hypothesis, educated guess

Q. Boiling point is a point at which liquid turns in to..
answer choices
solid
liquid
molten
gas
Q. If I added 27 grams of salt to water and separated the solution with a hot plate, what amount of salt would be left behind?
answer choices
20 grams
0 grams
27 grams
10 grams
Q. Stanley left an ice cube on his kitchen counter. An hour later, Stanley observed that the ice cube melted. Which statement best describes this change?
answer choices
Ice melting is a physical change because a new substance is created.
Ice melting is a chemical change because a new substance is created.
Ice melting is a chemical change because it may be reversed.
Ice melting is a physical change because it may be reversed.
Q. The faster molecules move, 
answer choices
the higher the temperature
the less temperature
the same temperature
I don't know
Q. The slower molecules move, 
answer choices
the higher the temperature
the less temperature
the same temperature
I don't know
Q.

Which letter represents particles in solid form?

answer choices

A

B

C

D

E

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