CHAPTER 1 REVIEW
Matter and Change
MIXED REVIEW
SHORT ANSWER Answer the following questions in the space provided.
1. Classify each of the following as a homogeneous or heterogeneous substance.
homogeneous homogeneous
a. sugar d. plastic wrap
homogeneous heterogeneous
b. iron filings e. cement sidewalk
heterogeneous
c. granola bar
2. For each type of investigation, select the most appropriate branch of chemistry from the following
choices: organic chemistry, analytical chemistry, biochemistry, theoretical chemistry. More than
one branch may be appropriate.
analytical chemistry
a. A forensic scientist uses chemistry to find
information at the scene of a crime.
theoretical chemistry/
b. A scientist uses a computer model to see how an
enzyme will function.
biochemistry
c. A professor explores the reactions that take place
in a human liver.
organic chemistry
d. An oil company scientist tries to design a better
gasoline.
analytical chemistry
e. An anthropologist tries to find out the nature of a
substance in a mummy’s wrap.
biochemistry/
f. A pharmaceutical company examines the protein
on the coating+ of a virus.
3. For each of the following types of chemical investigations, determine whether the investigation is
basic research, applied research, or technological development. More than one choice may apply.
basic research
a. A university plans to map all the genes on human
chromosomes.
applied research
b. A research team intends to find out why a lake
remains polluted to try to find a way to clean it up.
applied research/
c. A science teacher looks for a solvent that will allow
graffiti to be removed easily.
basic research/
d. A cancer research institute explores the chemistry
of the cell.
basic research
e. A professor explores the toxic compounds in
marine animals.
MODERN CHEMISTRY MATTER AND CHANGE 7
Copyright © by Holt, Rinehart and Winston. All rights reserved.
Name Date Class
biochemistry
analytical chemistry
technological development
applied research