Changes in Matter Answers

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The list below includes some of the properties of ammonia. Identify the physical properties in the list. Check all of the boxes that apply.

A
gas at room temperature
B
strong, unpleasant odor
C
reacts with hydrochloric acid
D
dissolves easily in water
E
burns in oxygen
3

Sample A has the same volume asa larger volume than✔ a smaller volume than sample B.

A
the same volume as
B
a larger volume than
C
✔ a smaller volume than
4

If sample A floats in water, sample B ✔ will also float in waterwill not float in watermay float in water, but more information is needed to know for sure.

A
✔ will also float in water
B
will not float in water
C
may float in water, but more information is needed to know for sure
5

If sample B is attracted to a magnet, sample A ✔ will also be attracted to a magnetwill not be attracted to a magnetmay be attracted to a magnet, but more information is needed to know for sure.

A
✔ will also be attracted to a magnet
B
will not be attracted to a magnet
C
may be attracted to a magnet, but more information is needed to know for sure
6

Question text not available

Answers:
sample B.:the same temperature as
sample A.:a larger mass than
sample B.:a smaller volume than
.:will also float in water
.:will also be attracted to a magnet
8

An industrial chemist is studying a sample of an unknown metal. Describe two ways he could change the metal physically and two ways he could change the metal chemically to try to identify it.

Answer:

He could physically change the metal by hammering it into a different shape and by melting it; both changes leave it as the same metal. He could chemically change it by reacting a small sample with acid and by exposing it to air to see whether it oxidizes. The observed changes and reaction products could help identify the metal.

9

Your answer may include the following changes. Select each of the changes that you included in your answer.

A
Heat the metal until it melts (physical change).
B
Attempt to react the metal with oxygen (chemical change).
C
Stretch the metal into a wire (physical change).
D
Attempt to react the metal with acid (chemical change).
10

Sample B has the same mass as✔ a larger mass thana smaller mass than sample A.

A
the same mass as
B
✔ a larger mass than
C
a smaller mass than

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Changes in Matter Answers — 26-27 CFISD…