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Unformatted text preview: the facts. A hypothesis is only temporary and is meant to be a working model or explanation. It
is often adjusted as new information is discovered. As a hypothesis grows and successfully survives many
experimental tests, it develops into a theory. A t heory is a unifying principle that explains a large body of
facts and laws. Besides providing explanations for the laws of science, its role is to aid in making predictions
that lead to new knowledge. In fact theories are often tested by carefully devised experiments that confirm or
disprove their predictions. 1
Back Forward Main Menu TOC Study Guide TOC Textbook Website MHHE Website 2 / Chemistry: The Study of Change MATTER AND ITS PROPERTIES
3. Distinguish between elements, compounds, and solutions.
Distinguish between homogeneous and heterogeneous mixtures.
Distinguish between physical and chemical properties of a substance. Elements and Compounds. A pure substance is a form of matter that has a definite composition and
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This note was uploaded on 09/15/2009 for the course CHEM 102 taught by Professor Bastos during the Spring '08 term at Adelphi.
- Spring '08