Name Open note quiz
February 5, 2021
1. A
is a change in the appearance or form of matter.
It does not change the chemical composition of the matter.
2. A
is a change in matter that produces one or more new
substances
3.
must be added to break bonds.
4. An example of energy is
5. What are two signs that a chemical change has occurred?
6. An ice cube absorbs energy so it is an
reaction
7. A
increases the rate or speeds up a chemical reaction.

Pegmatites are igneous rocks in which the individual minerals are very large. typically, the minerals are all light-colored quartz, feldspar and muscovite. if you were given a black and white photograph of a pegmatite in a quarry (where the rock has been blasted and broken), what physical properties could you use to identify those three minerals in this hypothetical photo? describe each mineral and the specific diagnostic properties. be specific.