StraighterLine Exam 1 (Chpt. 1-3)
b. Hypothesis - answers✔✔Which of the following is a tentative explanation for a set of observations?
a. Law
b. Hypothesis
c. Theory
d. Phenomena
e. Prediction
a. Element - answers✔✔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
C. Mass - answers✔✔Which of the following is an extensive property?
a. Density
b. Temperature
c. Mass
d. Specific Heat
e. Pressure
c. Broiling a stake on a grill - answers✔✔Which of the following is a chemical change?
a. Boiling water
b. Melting wax
c. Broiling a steak on a grill
d. Condensing water vapor into rainfall
, e. Carving a piece of wood
a. Water, when heated, forms steam. - answers✔✔Which one of these represents a physical change?
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.
4 - answers✔✔How many significant figures does the sum 8.5201 + 1.93 contain?
c. 4.2 mm/mo. - answers✔✔The city of Los Angeles is now approximately 2400 miles south of
Anchorage, Alaska. It is moving slowly northward as the San Andreas fault slides along. If Los Angeles is
to arrive near Anchorage in 76 million years, at what average rate will it have to move in mm per
month? (1 mi = 1609 m)
a. 2.0 × 10-10 mm/mo.
b. 6.6 × 10-6 mm/mo.
c. 4.2 mm/mo.
d. 9.5 mm/mo.
e. 51 mm/mo.
d. 10^6 - answers✔✔The SI prefix mega- (M) means
a. 10^-6
b. 10^-3
c. 10^3
d. 10^6
e. 10^9
b. increasing atomic number - answers✔✔In the periodic table, atoms are arranged in order of
a. increasing atomic mass.
b. Hypothesis - answers✔✔Which of the following is a tentative explanation for a set of observations?
a. Law
b. Hypothesis
c. Theory
d. Phenomena
e. Prediction
a. Element - answers✔✔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
C. Mass - answers✔✔Which of the following is an extensive property?
a. Density
b. Temperature
c. Mass
d. Specific Heat
e. Pressure
c. Broiling a stake on a grill - answers✔✔Which of the following is a chemical change?
a. Boiling water
b. Melting wax
c. Broiling a steak on a grill
d. Condensing water vapor into rainfall
, e. Carving a piece of wood
a. Water, when heated, forms steam. - answers✔✔Which one of these represents a physical change?
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.
4 - answers✔✔How many significant figures does the sum 8.5201 + 1.93 contain?
c. 4.2 mm/mo. - answers✔✔The city of Los Angeles is now approximately 2400 miles south of
Anchorage, Alaska. It is moving slowly northward as the San Andreas fault slides along. If Los Angeles is
to arrive near Anchorage in 76 million years, at what average rate will it have to move in mm per
month? (1 mi = 1609 m)
a. 2.0 × 10-10 mm/mo.
b. 6.6 × 10-6 mm/mo.
c. 4.2 mm/mo.
d. 9.5 mm/mo.
e. 51 mm/mo.
d. 10^6 - answers✔✔The SI prefix mega- (M) means
a. 10^-6
b. 10^-3
c. 10^3
d. 10^6
e. 10^9
b. increasing atomic number - answers✔✔In the periodic table, atoms are arranged in order of
a. increasing atomic mass.
