Unit 2 Test Review 2 Question Preview (ID: 44801)


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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
c)
d)

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
c)
d)

Reactivity
a) Material's ability to burn in the presence of oxygen
b) How readily a substance combines chemically with other substances
c)
d)

Flammability
a) A material's ability to burn in the presence of oxygen
b) How readily a substance combines chemically with other substances
c)
d)

Malleability
a) A substances ability to be hammered into a thin sheet
b) The ratio of a substances mass compared to its volume
c)
d)

A material's ability to allow heat to flow.
a) Conductivity
b) Viscosity
c)
d)

Combination of two or more substances NOT combined chemically.
a) Mixture
b) Compound
c)
d)

A substance made of 2 or more elements chemically combined.
a) Element
b) Compound
c)
d)

When one molecule of starch is changed into glucose. (something different)
a) Chemical
b) Physical
c)
d)

Anytime there is a phase change...
a) Physical
b) Chemical
c)
d)

The resistance of a substance to flow.
a) Viscosity- Chemical Change
b) Viscosity- Physical Change
c)
d)

Salt dissolves into water.
a) Physical
b) Chemical
c)
d)

Density
a) Physical Property
b) Chemical Property
c)
d)

NaCl table salt is made of Na and Cl. This is an example of...
a) A pure substance
b) A mixture
c) A compound
d)

When sugar dissolves into water.
a) A pure substance
b) A mixture
c)
d)

When something reacts with oxygen.
a) Chemical
b) Physical
c)
d)

Carbon is an example of....
a) A pure substance
b) A mixture
c)
d)

A pure substance that cannot be broken down into anything simpler.
a) Element
b) Compound
c)
d)

The particles in matter are constantly in motion.
a) True
b) False
c)
d)

A mixture that is evenly dispersed.
a) Homogenous
b) Heterogenous
c)
d)

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