Name _______ KEY __________________________________ Date _________ Period ______
Unit 1: Matter and Change Review
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What is studied in chemistry?
Chemistry is the study of matter and the changes it undergoes.
What two things does all matter have?
All matter must have mass and volume.
List the 5 branches of chemistry. What does each study?
Organic Chemistry – carbon-containing compounds, Inorganic Chemistry, metals
and non-organic compounds, Biochemistry – chemistry of living things, Analytical
Chemistry – makeup of substances, Physical Chemistry – laws of physics in
chemistry.
What are the steps of the scientific method? What is a control group in an experiment?
Identify the Problem, Make a Hypothesis, Test the Hypothesis, Analyze Data, and
Draw a Conclusion. A control group is the standard for comparison without the
independent variable.
What is the difference between a hypothesis, theory, and law?
A hypothesis is an educated guess as to how a problem can be solved, based on prior
knowledge. A theory is the best explanation of a phenomenon, and a law is the
description of a phenomenon.
Name which piece of laboratory equipment would be used for the following tasks:
a. Measuring exactly 43 mL of
b. Cover a hot beaker to avoid
water.
splashing.
Graduated Cylinder
Watch Glass
b. Suspending glassware over a
c. Bringing a liquid back to
Bunsen burner.
your lab table.
Ring Stand
Beaker
a. Removing a solid chemical
d. Swirling a liquid and solid
from a bottle.
together.
Scoopula
Erlenmeyer Flask
How can you separate pure substances? Mixtures?
Pure substances can only be separated by chemical means, mixtures can be
physically separated.
What is the difference between a homogeneous and heterogeneous mixture?
A homogeneous mixture is uniform, while a heterogeneous mixture is not uniform
and may settle upon standing.
Label each as an element, compound, homogeneous mixture, or heterogeneous mixture:
a. Granite
d. Brass
Heterogeneous Mixture
Homogeneous Mixture
b. Noncarbonated Energy Drink
e. Glass (SiO2)
Homogeneous Mixture
Compound
c. Cobalt (Co)
f. Snickers Bar
Element
Heterogeneous Mixture