Chemistry: The Central Science, 14th Edition Complete
Exam Questions & Answers for All Chapters 1-25 with
Over 150 + quiz with rationales and multiple choices |
2025 -2026 | Brandnew!!!!
Which property explains why oil floats on water?
A. Pressure
B. Density
C. Volume
D. Viscosity
Correct Answer: B. Density
Rationale: Oil is less dense than water, so it floats on top.
What happens to particle motion as temperature increases?
A. It stops
B. It slows down
C. It stays the same
D. It speeds up
Correct Answer: D. It speeds up
Rationale: Higher temperature means greater kinetic energy of particles.
Which change does NOT alter the identity of a substance?
A. Burning
B. Rusting
C. Melting
D. Reacting with acid
Correct Answer: C. Melting
Rationale: Melting is a physical change, not a chemical one.
Which is an example of a physical change?
A. Burning wood
B. Rusting iron
C. Dissolving sugar in water
D. Digesting food
,Correct Answer: C. Dissolving sugar in water
Rationale: The sugar remains the same substance.
Which is an example of a chemical change?
A. Cutting paper
B. Freezing water
C. Rust forming on iron
D. Crushing a can
Correct Answer: C. Rust forming on iron
Rationale: A new substance forms during rusting.
Which state of matter has particles packed closely and vibrating in place?
A. Gas
B. Liquid
C. Solid
D. Plasma
Correct Answer: C. Solid
Rationale: Solid particles vibrate but do not move freely.
Which state of matter has particles that slide past one another?
A. Solid
B. Liquid
C. Gas
D. Plasma
Correct Answer: B. Liquid
Rationale: Liquid particles are close together but can flow.
Which state of matter has particles moving freely at high speeds?
A. Solid
B. Liquid
C. Gas
D. Ice
Correct Answer: C. Gas
Rationale: Gas particles move freely and spread out.
,What happens to gas pressure if volume decreases and temperature stays the same?
A. Pressure decreases
B. Pressure increases
C. Pressure stays the same
D. Pressure becomes zero
Correct Answer: B. Pressure increases
Rationale: Gas particles collide more often in a smaller space.
Which instrument is commonly used to measure mass?
A. Thermometer
B. Ruler
C. Balance
D. Graduated cylinder
Correct Answer: C. Balance
Rationale: A balance compares mass to known standards.
Which tool is best for measuring liquid volume?
A. Balance
B. Beaker
C. Graduated cylinder
D. Thermometer
Correct Answer: C. Graduated cylinder
Rationale: It provides accurate volume readings.
Which unit is commonly used for mass in science?
A. Liter
B. Meter
C. Gram
D. Celsius
Correct Answer: C. Gram
Rationale: Mass is measured in grams or kilograms.
Which unit is used to measure volume?
A. Gram
B. Liter
, C. Newton
D. Celsius
Correct Answer: B. Liter
Rationale: Volume is measured in liters or milliliters.
What happens to density if mass increases but volume stays the same?
A. Density decreases
B. Density increases
C. Density stays the same
D. Density disappears
Correct Answer: B. Density increases
Rationale: Density is mass divided by volume.
Which mixture can be separated using filtration?
A. Salt water
B. Sugar water
C. Sand and water
D. Air
Correct Answer: C. Sand and water
Rationale: Sand particles are large enough to filter out.
Which method separates mixtures based on boiling point?
A. Filtration
B. Distillation
C. Magnetism
D. Evaporation
Correct Answer: B. Distillation
Rationale: Distillation relies on different boiling points.
Which separation method removes a dissolved solid from a liquid?
A. Filtration
B. Evaporation
C. Magnetism
D. Decanting
Exam Questions & Answers for All Chapters 1-25 with
Over 150 + quiz with rationales and multiple choices |
2025 -2026 | Brandnew!!!!
Which property explains why oil floats on water?
A. Pressure
B. Density
C. Volume
D. Viscosity
Correct Answer: B. Density
Rationale: Oil is less dense than water, so it floats on top.
What happens to particle motion as temperature increases?
A. It stops
B. It slows down
C. It stays the same
D. It speeds up
Correct Answer: D. It speeds up
Rationale: Higher temperature means greater kinetic energy of particles.
Which change does NOT alter the identity of a substance?
A. Burning
B. Rusting
C. Melting
D. Reacting with acid
Correct Answer: C. Melting
Rationale: Melting is a physical change, not a chemical one.
Which is an example of a physical change?
A. Burning wood
B. Rusting iron
C. Dissolving sugar in water
D. Digesting food
,Correct Answer: C. Dissolving sugar in water
Rationale: The sugar remains the same substance.
Which is an example of a chemical change?
A. Cutting paper
B. Freezing water
C. Rust forming on iron
D. Crushing a can
Correct Answer: C. Rust forming on iron
Rationale: A new substance forms during rusting.
Which state of matter has particles packed closely and vibrating in place?
A. Gas
B. Liquid
C. Solid
D. Plasma
Correct Answer: C. Solid
Rationale: Solid particles vibrate but do not move freely.
Which state of matter has particles that slide past one another?
A. Solid
B. Liquid
C. Gas
D. Plasma
Correct Answer: B. Liquid
Rationale: Liquid particles are close together but can flow.
Which state of matter has particles moving freely at high speeds?
A. Solid
B. Liquid
C. Gas
D. Ice
Correct Answer: C. Gas
Rationale: Gas particles move freely and spread out.
,What happens to gas pressure if volume decreases and temperature stays the same?
A. Pressure decreases
B. Pressure increases
C. Pressure stays the same
D. Pressure becomes zero
Correct Answer: B. Pressure increases
Rationale: Gas particles collide more often in a smaller space.
Which instrument is commonly used to measure mass?
A. Thermometer
B. Ruler
C. Balance
D. Graduated cylinder
Correct Answer: C. Balance
Rationale: A balance compares mass to known standards.
Which tool is best for measuring liquid volume?
A. Balance
B. Beaker
C. Graduated cylinder
D. Thermometer
Correct Answer: C. Graduated cylinder
Rationale: It provides accurate volume readings.
Which unit is commonly used for mass in science?
A. Liter
B. Meter
C. Gram
D. Celsius
Correct Answer: C. Gram
Rationale: Mass is measured in grams or kilograms.
Which unit is used to measure volume?
A. Gram
B. Liter
, C. Newton
D. Celsius
Correct Answer: B. Liter
Rationale: Volume is measured in liters or milliliters.
What happens to density if mass increases but volume stays the same?
A. Density decreases
B. Density increases
C. Density stays the same
D. Density disappears
Correct Answer: B. Density increases
Rationale: Density is mass divided by volume.
Which mixture can be separated using filtration?
A. Salt water
B. Sugar water
C. Sand and water
D. Air
Correct Answer: C. Sand and water
Rationale: Sand particles are large enough to filter out.
Which method separates mixtures based on boiling point?
A. Filtration
B. Distillation
C. Magnetism
D. Evaporation
Correct Answer: B. Distillation
Rationale: Distillation relies on different boiling points.
Which separation method removes a dissolved solid from a liquid?
A. Filtration
B. Evaporation
C. Magnetism
D. Decanting
