Straighterline chem 101 exam 1 with questions and answers
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Course
CHEM 101
Institution
STRAIGHTERLINE
Straighterline chem 101 exam 1 with questions and answers.Question 1
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Question text
What is the term used for findings that are summarized based on a pattern or trend?
Select one:
a. Law
b. Hypothesis
c. Theory
d. Phenomena
e. Prediction
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what is the term used for findings that are summar
what is a unifying principle that explains a body
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STRAIGHTERLINE
CHEM 101
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Question 1
Correct
4.60 points out of 4.60
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Question text
What is the term used for findings that are summarized based on a pattern or trend?
Select one:
a. Law
b. Hypothesis
c. Theory
d. Phenomena
e. Prediction
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The correct answer is: Law
Question 2
Correct
4.60 points out of 4.60
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Question text
What is a unifying principle that explains a body of experimental observations?
Select one:
a. Law
b. Hypothesis
c. Theory
d. Phenomena
e. Prediction
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The correct answer is: Theory
Question 3
Correct
4.60 points out of 4.60
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Question text
Which of these is an example of a physical property?
Select one:
a. Corrosiveness of sulfuric acid
b. Toxicity of cyanide
c. Flammability of gasoline
, d. Neutralization of stomach acid with an antacid
e. Lead becomes a liquid when heated to 601°C.
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The correct answer is: Lead becomes a liquid when heated to 601°C.
Question 4
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Question text
Which of the following is an example of an observation?
Select one:
a. Gases expand as their temperature increases because the gas molecules are moving more
rapidly.
b. Paraffin wax begins to melt at 57°C.
c. Three samples of wax are heated to 75°C.
d. The force acting on an object is equal to its mass times its acceleration.
e. Will all waxes melt at the same temperature?
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The correct answer is: Paraffin wax begins to melt at 57°C.
Question 5
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Which one of these represents a physical change?
Select one:
a. Water, when heated, forms steam.
b. Bleach turns hair yellow.
c. Sugar, when heated, becomes brown.
d. Milk turns sour.
e. Apples, when exposed to air, turn brown.
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The correct answer is: Water, when heated, forms steam.
Question 6
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