CHEMISTRY 120 EXAM 1 (CHAPTERS 1,
2, AND 3 INCLUDING ATOMIC WEIGHT)
EXAM WITH CORRECT QUESTIONS
AND ANSWERS 2025
Chemistry - CORRECT-ANSWERSthe study of the composition, structure, properties, and
reactions of matter
Matter - CORRECT-ANSWERSanything that has mass and occupies space
Chemical - CORRECT-ANSWERSa substance that always has the same composition and
properties wherever it is found/wherever it comes from
What is the scientific method? - CORRECT-ANSWERSA method that results in a theory/law
Scientific method procedure? - CORRECT-ANSWERS1. Ask a question
2. Background Research
3. Create a hypthesis (testable statement)
4. Test hypothesis
5. Analyze data (graphs)
,6. Report results (scientific paper)
-Will result in theory (not proven, can change) or a law (proven, never changes)
How do you solve for a percentage? - CORRECT-ANSWERSYou divide part/whole and then
multiply the numbers by 100%
What are the 2 units of measurement? - CORRECT-ANSWERS1. Metric System
2. International system of units (SI)
Metric units for length, volume, mass, temp., and time - CORRECT-ANSWERS1. Length: Meter
(m)
2. Volume: Liter (L)
3. Mass: Gram (g)
4. Temp: Degree Celsius (*c)
5. Time: Second (s)
SI units for length, volume, mass, temp, and time - CORRECT-ANSWERS1. Length: Meter (m)
2. Volume: Cubic Meter (m^3)
3. Mass: Kilogram (Kg)
4. Temp: Kelvin (K)
, 5. Time: Second (s)
Units you will most commonly use? - CORRECT-ANSWERSKilo- 1000 (K), Centi- 0.01 (c), and
milli- 0.001 (m)
How many grams in 1 Kg? - CORRECT-ANSWERS1000g
How many cg in 1 gram? - CORRECT-ANSWERS100cg
How many mg in 1 gram? - CORRECT-ANSWERS1000mg
Volume - CORRECT-ANSWERSThe amount of space a substance occupies
Mass - CORRECT-ANSWERSA measure of the quantity of material an object contains *Stays
the same but weight changes*
Temperature - CORRECT-ANSWERSThe measure of the amount of heat energy in an object
What are the 3 scales that measure temperature? - CORRECT-ANSWERS1. Kelvin Scale (100
degree intervals)
2, AND 3 INCLUDING ATOMIC WEIGHT)
EXAM WITH CORRECT QUESTIONS
AND ANSWERS 2025
Chemistry - CORRECT-ANSWERSthe study of the composition, structure, properties, and
reactions of matter
Matter - CORRECT-ANSWERSanything that has mass and occupies space
Chemical - CORRECT-ANSWERSa substance that always has the same composition and
properties wherever it is found/wherever it comes from
What is the scientific method? - CORRECT-ANSWERSA method that results in a theory/law
Scientific method procedure? - CORRECT-ANSWERS1. Ask a question
2. Background Research
3. Create a hypthesis (testable statement)
4. Test hypothesis
5. Analyze data (graphs)
,6. Report results (scientific paper)
-Will result in theory (not proven, can change) or a law (proven, never changes)
How do you solve for a percentage? - CORRECT-ANSWERSYou divide part/whole and then
multiply the numbers by 100%
What are the 2 units of measurement? - CORRECT-ANSWERS1. Metric System
2. International system of units (SI)
Metric units for length, volume, mass, temp., and time - CORRECT-ANSWERS1. Length: Meter
(m)
2. Volume: Liter (L)
3. Mass: Gram (g)
4. Temp: Degree Celsius (*c)
5. Time: Second (s)
SI units for length, volume, mass, temp, and time - CORRECT-ANSWERS1. Length: Meter (m)
2. Volume: Cubic Meter (m^3)
3. Mass: Kilogram (Kg)
4. Temp: Kelvin (K)
, 5. Time: Second (s)
Units you will most commonly use? - CORRECT-ANSWERSKilo- 1000 (K), Centi- 0.01 (c), and
milli- 0.001 (m)
How many grams in 1 Kg? - CORRECT-ANSWERS1000g
How many cg in 1 gram? - CORRECT-ANSWERS100cg
How many mg in 1 gram? - CORRECT-ANSWERS1000mg
Volume - CORRECT-ANSWERSThe amount of space a substance occupies
Mass - CORRECT-ANSWERSA measure of the quantity of material an object contains *Stays
the same but weight changes*
Temperature - CORRECT-ANSWERSThe measure of the amount of heat energy in an object
What are the 3 scales that measure temperature? - CORRECT-ANSWERS1. Kelvin Scale (100
degree intervals)
