sCIENCE 7

1. Name: _________________________
Mixtures
A. Match each statement to a letter. Use each letter only once.
1. Contains two or more pure substances. _________
2. Contains only one type of particle throughout. _________
3. A mixture in which two or more substances can be seen
and felt. _________
4. A mixture which looks and feels as though it is only made of
one substance. _________
5. Anything that has mass. ___________
B. Put each one of the words from part A in one of the following boxes to explain
the classification of matter.
C. In the following diagrams, the dots represent the atoms in a particular
substance. Label each one as either a pure substance, solution (homogeneous
mixture) or heterogeneous mixture.
______________________ ___________________ ____________________
A. pure substance
B. mixtures
C. heterogeneous mixture
D. homogeneous mixture
E. matter

2. Name: _________________________
D. Practice Questions
1. State whether each of the following is a pure substance, homogeneous mixture
(solution) or heterogeneous mixture.
a) hotdog relish ___________________________
b) freshly squeezed grapefruit juice _____________________________
c) soda water ____________________________
d) apple juice ____________________________
e) granola ______________________________
f) vegetable soup __________________________
g) a mixture of clay and water ______________________
h) a mixture of salt and water ________________________________
i) tomato juice ____________________________
j) salt _______________________________
k) air _________________________________
l) carbon dioxide _____________________________
m) smog _________________________________________
n) salt water ____________________________________
E. Dissolution:
Explain why a cube of sugar dropped in water will dissolve but a grain of salt dropped in
the same water will not dissolve. (see Eureka p. 197)
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