StraighterLine Exam 1
Which of the following is a tentative explanation for a set of
observations?
a.
Law
b.
Hypothesis
c.
Theory
d.
Phenomena
e. Prediction correct answers b.
Hypothesis
Which of the following cannot be separated into simpler substances by
chemical
means
?
a.
Element
b.
Emulsion
c.
Compound
d. Homogeneous
mixture
e. Heterogeneous mixture correct answers a.
Element
Which of the following is an extensive
property?
a.
Density
b.
Temperature
c.
Mass
d. Specific
Heat
e. Pressure correct answers C.
Mass
Which of the following is a chemical
change?
a. Boiling
water
b. Melting
c. Broiling a steak on a
wax
grill
d. Condensing water vapor into
rainfall
e. Carving a piece of wood correct answers c. Broiling a stake
on a grill
Which one of these represents a physical
change?
a. Water, when heated, forms
b. Bleach turns hair
steam.
yellow.
c. Sugar, when heated, becomes
brown.
d. Milk turns
sour.
e. Apples, when exposed to air, turn brown. correct answers a. Water,
when heated,
forms
steam.
How many significant figures does the sum 8.5201 + 1.93 contain? correct
answers 4
The city of Los Angeles is now approximately 2400 miles south of Anchorage,
Alaska.
is movingIt slowly northward as the San Andreas fault slides along. If Los
Angeles is to
Which of the following is a tentative explanation for a set of
observations?
a.
Law
b.
Hypothesis
c.
Theory
d.
Phenomena
e. Prediction correct answers b.
Hypothesis
Which of the following cannot be separated into simpler substances by
chemical
means
?
a.
Element
b.
Emulsion
c.
Compound
d. Homogeneous
mixture
e. Heterogeneous mixture correct answers a.
Element
Which of the following is an extensive
property?
a.
Density
b.
Temperature
c.
Mass
d. Specific
Heat
e. Pressure correct answers C.
Mass
Which of the following is a chemical
change?
a. Boiling
water
b. Melting
c. Broiling a steak on a
wax
grill
d. Condensing water vapor into
rainfall
e. Carving a piece of wood correct answers c. Broiling a stake
on a grill
Which one of these represents a physical
change?
a. Water, when heated, forms
b. Bleach turns hair
steam.
yellow.
c. Sugar, when heated, becomes
brown.
d. Milk turns
sour.
e. Apples, when exposed to air, turn brown. correct answers a. Water,
when heated,
forms
steam.
How many significant figures does the sum 8.5201 + 1.93 contain? correct
answers 4
The city of Los Angeles is now approximately 2400 miles south of Anchorage,
Alaska.
is movingIt slowly northward as the San Andreas fault slides along. If Los
Angeles is to
