PORTAGE LEARNING CHEM 103 GENERAL CHEMISTRY MODULE 1 EXAM –
QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS |
PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
*Core Domains*
*Scientific Method and Measurement*
*Classification and Properties of Matter*
*Temperature Scales and Conversions*
*Significant Figures and Calculations*
*Density and Specific Gravity*
*Atomic Theory and Structure*
*Subatomic Particles and Isotopes*
*The Periodic Table Organization*
*Chemical Formulas and Nomenclature*
*Matter-Energy Relationships*
*Introduction*
*This comprehensive exam is designed to assess foundational mastery of Genera
SECTION ONE: QUESTIONS 1–100
, 1. Which of the following is defined as anything that has mass and takes up
space?
A. Energy
B. Matter
C. Vacuum
D. Force
🟢 B. Matter
🔴 Explanation: Matter is the physical substance of the universe that possesses
mass and occupies a physical volume, distinguishing it from forms of energy.
2. A sample of substance has a fixed volume but takes the shape of its container.
In which state of matter does this substance exist?
A. Solid
B. Gas
C. Liquid
D. Plasma
🟢 C. Liquid
,🔴 Explanation: Liquids are characterized by having a definite volume but no definite
shape, allowing them to flow and conform to the geometry of their container.
3. Which step of the scientific method involves proposing a tentative explanation
for an observation that can be tested?
A. Theory
B. Experiment
C. Law
D. Hypothesis
🟢 D. Hypothesis
🔴 Explanation: A hypothesis is an educated guess or a proposed explanation made
on the basis of limited evidence as a starting point for further investigation.
4. How many significant figures are in the measurement 0.005020 g?
A. 3
B. 4
C. 5
D. 6
, 🟢 B. 4
🔴 Explanation: Leading zeros are never significant. The digits 5, 0, 2, and the
trailing zero after the decimal are significant, totaling four.
5. Convert 75 degrees Fahrenheit to Celsius.
A. 23.9
B. 43.0
C. 167.0
D. 20.5
🟢 A. 23.9
🔴 Explanation: Using the formula C = (F − 32)/1.8, (75 − 32)/1.8 = 23.88, which
rounds to 23.9.
6. Which of the following is an example of a chemical change?
A. Melting ice
B. Dissolving sugar in water
C. Burning wood
D. Boiling ethanol
QUESTIONS AND ANSWERS | VERIFIED AND WELL DETAILED ANSWERS |
PLUS RATIONALES | GUARANTEED PASS | LATEST EXAM UPDATE
*Core Domains*
*Scientific Method and Measurement*
*Classification and Properties of Matter*
*Temperature Scales and Conversions*
*Significant Figures and Calculations*
*Density and Specific Gravity*
*Atomic Theory and Structure*
*Subatomic Particles and Isotopes*
*The Periodic Table Organization*
*Chemical Formulas and Nomenclature*
*Matter-Energy Relationships*
*Introduction*
*This comprehensive exam is designed to assess foundational mastery of Genera
SECTION ONE: QUESTIONS 1–100
, 1. Which of the following is defined as anything that has mass and takes up
space?
A. Energy
B. Matter
C. Vacuum
D. Force
🟢 B. Matter
🔴 Explanation: Matter is the physical substance of the universe that possesses
mass and occupies a physical volume, distinguishing it from forms of energy.
2. A sample of substance has a fixed volume but takes the shape of its container.
In which state of matter does this substance exist?
A. Solid
B. Gas
C. Liquid
D. Plasma
🟢 C. Liquid
,🔴 Explanation: Liquids are characterized by having a definite volume but no definite
shape, allowing them to flow and conform to the geometry of their container.
3. Which step of the scientific method involves proposing a tentative explanation
for an observation that can be tested?
A. Theory
B. Experiment
C. Law
D. Hypothesis
🟢 D. Hypothesis
🔴 Explanation: A hypothesis is an educated guess or a proposed explanation made
on the basis of limited evidence as a starting point for further investigation.
4. How many significant figures are in the measurement 0.005020 g?
A. 3
B. 4
C. 5
D. 6
, 🟢 B. 4
🔴 Explanation: Leading zeros are never significant. The digits 5, 0, 2, and the
trailing zero after the decimal are significant, totaling four.
5. Convert 75 degrees Fahrenheit to Celsius.
A. 23.9
B. 43.0
C. 167.0
D. 20.5
🟢 A. 23.9
🔴 Explanation: Using the formula C = (F − 32)/1.8, (75 − 32)/1.8 = 23.88, which
rounds to 23.9.
6. Which of the following is an example of a chemical change?
A. Melting ice
B. Dissolving sugar in water
C. Burning wood
D. Boiling ethanol
