Exam (elaborations)
Chapter 7 test Exam 2024/2025 Questions With Completed & Verified Solution.
Chapter 7 test Exam 2024/2025 Questions With Completed & Verified Solution.
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Chapter 7 testWhat term applies to all living things and those things that were once alive?
A. inorganic
B. matter
C. organic
D. element - ANS C. organic
gasoline, synthetic fabrics plastics and pesticides are all considered organic because they are
all manufactured from__________.
A. natural gas and oil
B. subatomic particles
C. sodium chloride
D. ammonium thioglycolate acid - ANS A. natural gas and oil
metals, minerals, water, air, and ammonia are all examples of ____________ substances.
A. live
B. inorganic
C. natural
D. organic - ANS B. inorganic
organic chemistry is the study of substances that contain the element__________.
A. oxygen
B. hydrogen
C. sulfur
D. carbon - ANS D. carbon
which of the following is defined as anything that occupies space (volume) and has mass (
weight)?
A. oxygen
B. hydrogen
C. sulfur
D. carbon. - ANS D. carbon
there are 118 different elements know to science today. how many of these are naturally
occurring on earth ?
A. 116
B. 98
C. 50
D. 76 - ANS D. 76
which of the following are the basic building blocks of all matter?
, A. electrons
B. protons
C. molecules
D. Atoms - ANS D. Atoms
__________ is the most common element found in the know universe.
A. hydrogen
B. oxygen
C. carbon dioxide
D. sodium - ANS A. hydrogen
an example of an elemental molecule is __________.
A. hydrogen peroxide
B. common table salt
C. water
D. the oxygen in the air - ANS D. the oxygen in the air
As the basic unit of matter, ________ cannot be divided into simpler substances by ordinary
chemical means.
A. molecules
B. oxygen
C. atoms
D. water - ANS C. atoms
Rushing iorn and burning wood are examples of a change in what type of properties?
A. chemical
B. Physical
C. mechanical
D. electrical - ANS A. chemical
what chemical compound can exist in all three states of matter depending on its temperature?
A. carbon dioxide
B. hydrogen
C. water
D. oxygen - ANS C. water
An example of physical change is __________.
A. rusting iorn
B. ice melting
C. burning wood
D. oxidation - ANS B. ice melting
in hair lightening processes, what substances oxidizes the melanin pigments in hair, leaving the
hair a lighter color?
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