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CHM130 Midterm Exam Questions And Answers
Latest Update 2026 With Complete Solution Rio
Salado College
STUDY OBJECTIVES
Lesson 1
• Define Chemistry
Chemistry is the study of the composition, structure, properties, and reactions of matter.
(The branch of science that deals with the identification of the substances of which matter is
composed; the investigation of their properties and the ways in which they interact, combine,
and change; and the use of these processes to form new substances
• Model the four steps of the Scientific Method to solve everyday and chemistry problems
The process of making observations, proposing a hypothesis, and testing the hypothesis; after
repeated experiments validate the hypothesis, it may become a theory.
• Observation Information determined by noting and recording a natural phenomenon.
• Hypothesis An unverified explanation of a natural phenomenon.
• Experiment A procedure that tests the validity of a hypothesis.
• Conclusion An explanation of an observation that has been validated by repeated
experiments that support a hypothesis.
Theory An explanation for an observation supported by additional experiments that confirm
the hypothesis.
Lesson 2
• Demonstrate knowledge of the Metric System
• Interconvert between various SI units
A ratio in which the numerator and denominator are quantities from an equality or given
relationship. For example, the two conversion factors for the equality 1 kg = 2.205 lb are
written as
2.205 lb / 1 kg
and
1 kg / 2.205 lb
Whole Units Decimal Units
thousands hundreds tens basic unit tenths hundredths thousandths
1000 100 10 1 0.1 0.01 0.001
meter
, 2
kilo- hecto- deka- gram deci- centi- milli
liter
CHM130 Midterm Exam Questions And Answers
Latest Update 2026 With Complete Solution Rio
Salado College
STUDY OBJECTIVES
Lesson 1
• Define Chemistry
Chemistry is the study of the composition, structure, properties, and reactions of matter.
(The branch of science that deals with the identification of the substances of which matter is
composed; the investigation of their properties and the ways in which they interact, combine,
and change; and the use of these processes to form new substances
• Model the four steps of the Scientific Method to solve everyday and chemistry problems
The process of making observations, proposing a hypothesis, and testing the hypothesis; after
repeated experiments validate the hypothesis, it may become a theory.
• Observation Information determined by noting and recording a natural phenomenon.
• Hypothesis An unverified explanation of a natural phenomenon.
• Experiment A procedure that tests the validity of a hypothesis.
• Conclusion An explanation of an observation that has been validated by repeated
experiments that support a hypothesis.
Theory An explanation for an observation supported by additional experiments that confirm
the hypothesis.
Lesson 2
• Demonstrate knowledge of the Metric System
• Interconvert between various SI units
A ratio in which the numerator and denominator are quantities from an equality or given
relationship. For example, the two conversion factors for the equality 1 kg = 2.205 lb are
written as
2.205 lb / 1 kg
and
1 kg / 2.205 lb
Whole Units Decimal Units
thousands hundreds tens basic unit tenths hundredths thousandths
1000 100 10 1 0.1 0.01 0.001
meter
, 2
kilo- hecto- deka- gram deci- centi- milli
liter
