Chem practice TEST 1 answer key

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Medway High School
Name_________________
Chemistry
Chemistry Practice TEST
Multiple Choice:
16) A Law is:
a) an observation recorded from an experiment.
b) a proposed explanation for what is observed.
c) a concise statement that summarizes the results of a broad variety of
experiments
d) a thoroughly tested model.
17) Which of the following is a physical property?
a) spoiling food
b) explosion
c) dissolving salt
d) all of these
19) A hypothesis comes from?
a) observation
b) experimentation
c) theory
d) law
20) In which of the following is chemistry or chemicals involved?
a) matter
b) energy
c) physical properties d) chemical properties e) all of these
21) Fools gold (pyrite) is similar in appearance to gold, and fooled gold miners in the
late1800s as real gold. Clever miners, at mining sites, tested fools gold from the real thing
by hitting it with a hammer. What type of property was tested?
a) chemical property b) phase
c) physical property
d) theory
22) Dissolving is?
a) physical
b) mixture
c) homogeneous
d) all of these
24) Identify which is not a property of a solid?
a) definite shape
b) incompressible
c) flows
d) all of these
c) flows
d) all of these
25) Identify the properties of a liquid?
a) indefinite shape
b) incompressible
26) Common Table Salt is?
a) an element b) a compound c) a heterogeneous mixture d) a homogeneous mixture
True-False:
Classify each of the following as true or false.
_T__27) Mixtures can be made up with two or more substances.
_F__28) Dissolving sugar is a chemical process.
_F__29) Density is a chemical property of a substance.
_F__30) Melting point is a chemical property of a substance.
__F_31) Flammability is a physical property of a substance.
_T__32) Experiments offer new observations that lead to a better hypothesis
_F__33) Qualitative involve numbers and amounts
_F__34) Baking a potato is chemical.
Mr. Hoek
1 of 2
Practice Test
September, 2012
Medway High School
Name_________________
Chemistry
Classify:
Circle the correct property of the element Copper as chemical or physical properties.
41) melting point
chemical
physical
42) makes bubbles when added to acid
chemical
physical
42) color
chemical
physical
44) tarnishes
chemical
physical
45) flexibility
chemical
physical
Circle the correct type of measurement data as Qualitative or Quantitative.
46) melting point
Qualitative
Quantitative
47) density
Qualitative
Quantitative
48) mass
Qualitative
Quantitative
49) flexibility
Qualitative
Quantitative
50) color
Qualitative
Quantitative
Circle the correct type of mixture data as Homogeneous or Heterogeneous.
51) Spaghetti & meatballs
Homogeneous
Heterogeneous
52) Cup of tea
Homogeneous
Heterogeneous
53) Welch’s Grape Juice
Homogeneous
Heterogeneous
54) Sand in water
Homogeneous
Heterogeneous
55) Seawater
Homogeneous
Heterogeneous
Circle the correct type of substance as Element, Compound or Mixture. (Hint use
periodic table)
56) Table Salt
Element
Compound
Mixture
57) Penny
Element
Compound
Mixture
58) Granite
Element
Compound
Mixture
59) Coffee
Element
Compound
Mixture
60) Magnesium
Element
Compound
Mixture
Mr. Hoek
2 of 2
Practice Test
September, 2012
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