Rio Salado CHM 130 Midterm Objectives Exam Questions and Answers 100% Pass
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Course
CHM
Institution
CHM
Rio Salado CHM 130 Midterm Objectives
Exam Questions and Answers 100%
Pass
Chemistry - A science that studies the composition of substances and
the way they interact with other substances.
Steps of the Scientific Method - 1. Observation
2. Hypothesis
3. Experiment
4. Conclusion
Metric syst...
Chemistry - ✔✔A science that studies the composition of substances and
the way they interact with other substances.
Steps of the Scientific Method - ✔✔1. Observation
2. Hypothesis
3. Experiment
4. Conclusion
Metric system - ✔✔Length (meter), Volume (liter), Mass (gram), Temp. (C),
Time (second)
SI system - ✔✔Length (meter), Volume (cubic meter), Mass (kilogram),
Temp. (kelvin), Time (second)
Scientific Notation - ✔✔a coefficient, a power of 10, and a unit of
measurement. (Ex. 8.6 x 10-4 g)
, Measured Number - ✔✔numbers you obtain when you measure a quantity
using a measuring tool
Significant Figures - ✔✔are all the digits including the estimated digit. All
nonzero numbers are counted as significant figures.
Exact Numbers - ✔✔numbers obtained by counting items or using a
definition that compares two units in the same measuring system.
Kilo- - ✔✔1 000
mega- - ✔✔1 000 000
deci- - ✔✔0.1
centi- - ✔✔0.01
milli- - ✔✔0.001
micro- - ✔✔0.000 001
Conversion Factors - ✔✔An equality written as a fraction.
Density - ✔✔mass/volume (Ex. 68 g/9.5 mL)
Matter - ✔✔the material that makes up a substance and has mass and
occupies space
Pure substance - ✔✔A type of matter composed of elements and
compounds that has a definite composition
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