Page 253 - Science Course 1 (Book 1)
P. 253
Mo6-L7c: What are Mixtures?
Formula and molecular Properties / Uses SUMMARY
structure What are Substances and Compounds?
A substance is matter with a composition that
is always the same.
Colorless gas used
as an anesthetic
N20
Nitrous oxide
brown gas, toxic,
air pollution
NO2
Nitrogen dioxide
blue liquid
N2O3
Dinitrogen trioxide
Mo6-L7c What are Mixtures? Heterogeneous
a mixture in which substances are not evenly mixed.
KEY CONCEPTS:
1. How are some mixtures different from solutions?
2. How do mixtures and compounds differ?
Vocabulary A-Z
Let us learn some vocabulary
Homogeneous
Mixture
matter that can vary in composition. a mixture in which two or more substances are
evenly mixed but not bonded together.
Molecule Molecule Molecule
and and
compound compound
Compound Atom Mixture
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