UNE CHEM1010 MidtErM ExaM latEst 2026 aCtUal QUEstioNs aNd
VErifiEd aNsWErs (latEst UpdatE) a+ GradE 100%
GUaraNtEE VErifiEd By ExpErts
A comprehensive, testable explanation that explains a large body of experimental data
is a/an
A) Hypothesis
B) Law
C) Theory
D) Model - ANSWER-C) Theory
A gas
A) Has fixed shape and volume
B) Expands to completely fill a container
C) Takes shape of a container and forms a horizontal upper surface
D) Is rigid and has a definite shape - ANSWER-B) Expands to completely fill a container
Two or more types of matter that can be separated by physical changes is a/an
A) Mixture
B) Compound
C) Molecule
D) Element - ANSWER-A) Mixture
Which of the following is a chemical change?
A) Cheese being shredded
,B) Snow melting
C) Toast burning
D) Salt dissolving in water - ANSWER-C) Toast burning
When adding or subtracting measurements
A) The number of decimal places in the answer will equal the greatest decimal places in
a number in the calculation
B) The number of significant figures in the answer will equal the greatest significant
figures in a number in the calculation
C) The number of decimal places in the answer will equal the fewest decimal places in a
number in the calculation
D) The number of significant figures in the answer will equal the fewest significant
figures in a number in the calculation - ANSWER-C) The number of decimal places in
the answer will equal the fewest decimal places in a number in the calculation
A Class-A 10 mL pipette is supposed to dispense 10.00 mL of water. A lab technician
makes three measurements of the volume that the pipette actually dispenses, and
obtains volumes of 10.01 mL, 9.99 mL, and 10.00 mL. The pipette is
A) Precise, but not accurate
B) Accurate, but not precise
C) Accurate and precise
D) Neither accurate or precise - ANSWER-C) Accurate and precise
What is the answer to 136.8 + 7.897 - 0.04, reported with the correct number of
significant figures?
A) 144.6
B) 144
C) 144.66
D) 144.657 - ANSWER-A) 144.6
,What is the answer to 5.763 x 0.111 ÷ 1.2, reported to the correct number of significant
figures?
A) 0.5330
B) 0.533
C) 0.53
D) 0.5 - ANSWER-C) 0.53
How many millimeters are in 0.24 km?
A) 2.4 x 102 mm
B) 2.4 x 10-4 mm
C) 2.4 x 10-7 mm
D) 2.4 x 105 mm - ANSWER-D) 2.4 x 105 mm
The density of copper is 8.96 g/cm3. What is the volume in cm3 of 1.35 pounds of
copper?
A) 68.3 cm3
B) 3.32 x 10-4 cm3
C) 5.49 x 103 cm3
D) 2.67 x 10-2 cm3 - ANSWER-A) 68.3 cm3
A tentative explanation of observations is a/an
A)Theory
B) Law
C) Model
D) Hypothesis - ANSWER-D) Hypothesis
, A solid
A)Expands to completely fill a container
B) Takes shape of a container and forms a horizontal upper surface
C) Has fixed shape and volume
D) Flows when acted upon by gravity - ANSWER-C) Has fixed shape and volume
A pure substance that cannot be broken down into simpler substances by chemical
changes is a/an
A) Mixture
B) Compound
C) Solution
D) Element - ANSWER-D) Element
Which of the following is a physical change?
A) Toast burning
B) A garden tool rusting
C) Combustion of gasoline in a car
D) Condensation forming on a window - ANSWER-D) Condensation forming on a
window
When multiplying or dividing measurements
A) The number of decimal places in the answer will equal the fewest decimal places in a
number in the calculation
B) The number of decimal places in the answer will equal the greatest decimal places in
a number in the calculation
VErifiEd aNsWErs (latEst UpdatE) a+ GradE 100%
GUaraNtEE VErifiEd By ExpErts
A comprehensive, testable explanation that explains a large body of experimental data
is a/an
A) Hypothesis
B) Law
C) Theory
D) Model - ANSWER-C) Theory
A gas
A) Has fixed shape and volume
B) Expands to completely fill a container
C) Takes shape of a container and forms a horizontal upper surface
D) Is rigid and has a definite shape - ANSWER-B) Expands to completely fill a container
Two or more types of matter that can be separated by physical changes is a/an
A) Mixture
B) Compound
C) Molecule
D) Element - ANSWER-A) Mixture
Which of the following is a chemical change?
A) Cheese being shredded
,B) Snow melting
C) Toast burning
D) Salt dissolving in water - ANSWER-C) Toast burning
When adding or subtracting measurements
A) The number of decimal places in the answer will equal the greatest decimal places in
a number in the calculation
B) The number of significant figures in the answer will equal the greatest significant
figures in a number in the calculation
C) The number of decimal places in the answer will equal the fewest decimal places in a
number in the calculation
D) The number of significant figures in the answer will equal the fewest significant
figures in a number in the calculation - ANSWER-C) The number of decimal places in
the answer will equal the fewest decimal places in a number in the calculation
A Class-A 10 mL pipette is supposed to dispense 10.00 mL of water. A lab technician
makes three measurements of the volume that the pipette actually dispenses, and
obtains volumes of 10.01 mL, 9.99 mL, and 10.00 mL. The pipette is
A) Precise, but not accurate
B) Accurate, but not precise
C) Accurate and precise
D) Neither accurate or precise - ANSWER-C) Accurate and precise
What is the answer to 136.8 + 7.897 - 0.04, reported with the correct number of
significant figures?
A) 144.6
B) 144
C) 144.66
D) 144.657 - ANSWER-A) 144.6
,What is the answer to 5.763 x 0.111 ÷ 1.2, reported to the correct number of significant
figures?
A) 0.5330
B) 0.533
C) 0.53
D) 0.5 - ANSWER-C) 0.53
How many millimeters are in 0.24 km?
A) 2.4 x 102 mm
B) 2.4 x 10-4 mm
C) 2.4 x 10-7 mm
D) 2.4 x 105 mm - ANSWER-D) 2.4 x 105 mm
The density of copper is 8.96 g/cm3. What is the volume in cm3 of 1.35 pounds of
copper?
A) 68.3 cm3
B) 3.32 x 10-4 cm3
C) 5.49 x 103 cm3
D) 2.67 x 10-2 cm3 - ANSWER-A) 68.3 cm3
A tentative explanation of observations is a/an
A)Theory
B) Law
C) Model
D) Hypothesis - ANSWER-D) Hypothesis
, A solid
A)Expands to completely fill a container
B) Takes shape of a container and forms a horizontal upper surface
C) Has fixed shape and volume
D) Flows when acted upon by gravity - ANSWER-C) Has fixed shape and volume
A pure substance that cannot be broken down into simpler substances by chemical
changes is a/an
A) Mixture
B) Compound
C) Solution
D) Element - ANSWER-D) Element
Which of the following is a physical change?
A) Toast burning
B) A garden tool rusting
C) Combustion of gasoline in a car
D) Condensation forming on a window - ANSWER-D) Condensation forming on a
window
When multiplying or dividing measurements
A) The number of decimal places in the answer will equal the fewest decimal places in a
number in the calculation
B) The number of decimal places in the answer will equal the greatest decimal places in
a number in the calculation
