Chem 120 Midterm Exam 2 (Latest 2023 - 2024)
New Full Exam Questions and Answers ( Included ) 100% Correct
- Scientific Method Steps
Answer: Observations, Hypothesis, Experiment, Data Collection (Results), Theory
- independent variable
Answer: The experimental factor that is manipulated; the variable whose effect is being studied
- dependent variable
Answer: The outcome factor; the variable that may change in re- sponse to
manipulations of the independent variable.
- quantitative properties
Answer: mass, volume, density, temperature
- Qualitative properties
Answer: color and odor
- giga-
Answer: 10^9
- mega-
Answer: 10^6
- kilo-
Answer: 10^3
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- centi-
Answer: 10^-2
- milli-
Answer: 10^-3
- micro-
Answer: 10^-6
- nano-
Answer: 10^-9 13. pico-: 10^-12
- dimensional analysis
Answer: a mathematical technique that allows you to use units to solve problems
involving measurements
- Law of Conservation of Mass
Answer: Matter is not created nor destroyed in any chemical or physical change
- Boyle's law
Answer: A principle that describes the relationship between the pressure and volume of a gas at constant temperature
P1V1=P2V2
- Charles' Law
Answer: the law that states that for a fixed amount of gas at a constant pressure, the volume of the gas increases as the temperature of the gas increases and the volume of the gas decreases as the temperature of the gas decreases
V1/T1=V2/T2
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