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Chemistry 121-Chapter 1, 2, 3 (Test 1) Exam with complete solutions 2024_2025.
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Chemistry 121-Chapter 1, 2, 3 (Test 1) Exam with complete solutions 2024_2025.
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Chemistry 121-Chapter 1, 2, 3 (Test 1)Exam with complete solutions 2024/2025
Atoms - ANSWER-submicroscopic particles, fundamental building blocks of
ordinary matter
Molecules - ANSWER-two or more atoms attached together in a specific
geometrical arrangement
Bonds - ANSWER-Attachments between particles that come in different sizes and
shapes
Chemistry - ANSWER-the science that seeks to understand the behavior of matter
by studying the behavior of atoms and molecules
Matter - ANSWER-Anything that occupies space and has mass, classified based
on state and composition
Divisions of Matter - ANSWER-Pure Substances and Mixtures
Division of Pure Substances - ANSWER-Elements and Compounds
Divisions of Mixtures - ANSWER-Homogenous(uniform throughout) and
Heterogenous
, Physical Properties - ANSWER-Characteristics of matter that can be changed
without changing its composition (directly observable)
Chemical Properties - ANSWER-Characteristics that determine how the
composition of matter changes as a result of contact with other matter or the
influence of energy(Describe behavior of matter)
Physical Changes in matter - ANSWER-Boiling point, State changes, dissolving
(anything that does not change the chemical composition)
Chemical Changes in Matter - ANSWER-Rusting(combining oxygen), burning,
dyes fade, changing color, combustion
Standard Units - ANSWER-Meter, kilogram, second, Kelvin
Mega - ANSWER-1,000,000
kilo - ANSWER-1,000
deci - ANSWER-.1
centi - ANSWER-.01
milli - ANSWER-.001
micro - ANSWER-.000001
nano - ANSWER-.000000001
pico - ANSWER-.000000000001
Mass - ANSWER-measure of the amount of matter present in an object
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