Name _______________________________________________ Date ___________________ Period _______
Inquiry 11.1 Identifying Pure Substances and Mixtures
1. What is your definition of the word PURE, as it relates to a “pure substance?”
2. Give two examples of pure substances, and explain why you think each is pure.
Substance
Explanation
1.
2.
3. If you, a scientist, were given an unknown sample of matter, how could you tell whether it was a pure
substance or mixture? (What would you look for? What tests could you do?)
Table 1 Results of Inquiry
Sample
Pure Substance
or Mixture?
A
B
C
D
E
F
G
H
What observations helped you reach your
conclusion?
Revisions?
6. Were all the samples well-mixed? Did the extent of mixing affect your investigation?
7. Which samples were mixtures of:
a. More than one LIQUID
b. More than one SOLID
c. A LIQUID and a GAS
8. Define PURE SUBSTANCE.
9. Define MIXTURE.
10. Write a paragraph that answers the question “How can the properties of pure substances be used to
discover whether a sample is a mixture or a pure substance? Include examples.