This document discusses various chemistry concepts including:
1. Distillation and evaporation, which are processes that separate substances based on their boiling points.
2. Evidence of chemical reactions such as changes in color, formation of gases or precipitates, and changes in temperature.
3. The classifications of matter as pure substances or mixtures, and the different types of mixtures and their properties.
6. How to classify matter
Matter
pure substance mixture
homogenous heterogenous
Element
Compound mixture mixture
7. Mixtures
• Two or more substances that are not
chemically combined with each other and
be separated by Physical means. The
substances in a mixture retain their
characteristic properties.
8. Elements
• The simplest form of pure substances.
• A element has a fixed composition because
it contains only one type of atom
12. Distillation
• A process that seperates the substances in
a slution based on boiling points.
13. Filtration
• A process that separates materials based
on the size of their particles and or
solubility
14. Physical v. Chemical
Change
• Physical change does not have any change in
composition.
• Chemical change does have a change in the
composition.
15. Reactivity of Hydrogen
and Oxygen
• Hydrogen is explosive, and the density of it
is less so the air rises.
• Oxygen will ignite an embruing flame, and
the density is greater so the air sinks.