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Unit 2 Test Review 2
Test Description: Study for your test.
Instructions: Answer all questions to get your test result.
1) The particles in matter are constantly in motion.
A
False
B
True
2) A mixture that is evenly dispersed.
A
Heterogenous
B
Homogenous
3) A pure substance that cannot be broken down into anything simpler.
A
Compound
B
Element
4) Carbon is an example of....
A
A pure substance
B
A mixture
5) NaCl table salt is made of Na and Cl. This is an example of...
A
A mixture
B
A pure substance
C
A compound
6) When sugar dissolves into water.
A
A pure substance
B
A mixture
7) When something reacts with oxygen.
A
Physical
B
Chemical
8) Density
A
Physical Property
B
Chemical Property
9) The resistance of a substance to flow.
A
Viscosity- Chemical Change
B
Viscosity- Physical Change
10) Salt dissolves into water.
A
Physical
B
Chemical
11) Anytime there is a phase change...
A
Chemical
B
Physical
12) When one molecule of starch is changed into glucose. (something different)
A
Physical
B
Chemical
13) A substance made of 2 or more elements chemically combined.
A
Element
B
Compound
14) Combination of two or more substances NOT combined chemically.
A
Compound
B
Mixture
15) A material's ability to allow heat to flow.
A
Conductivity
B
Viscosity
16) Malleability
A
The ratio of a substances mass compared to its volume
B
A substances ability to be hammered into a thin sheet
17) Flammability
A
How readily a substance combines chemically with other substances
B
A material's ability to burn in the presence of oxygen
18) Reactivity
A
Material's ability to burn in the presence of oxygen
B
How readily a substance combines chemically with other substances
19) Chemical change...
A
Substance reacts and forms one or more new substances
B
A change in substance appearance, without changing the composition of the material
20) Physical change...
A
A change in substance appearance, without changing the composition of the material
B
Substance reacts and forms one or more new substances
*select an answer for all questions
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