Download Essentials Review

Essentials Review:
1. What are the smallest units of matter?
2. What are examples of physical properties and change?
3. What are examples of chemical properties and change?
4. Give 3 examples of evidence of chemical change:
5.
True (T) or False (F)
1.
Changing the size and shapes of pieces of wood would be a chemical change.
2.
In a physical change, the makeup of matter is changed.
3.
Evaporation occurs when liquid water changes into a gas.
4.
Evaporation is a physical change.
5.
Burning wood is a physical change.
6.
Combining hydrogen and oxygen to make water is a physical change.
7.
Breaking up concrete is a physical change.
8.
Sand being washed out to sea from the beach is a chemical change.
9.
When ice cream melts, a chemical change occurs.
10.
Acid rain damaging a marble statue is a physical change.
6. What is the difference between an element and a compound?
7. Hydrogen and oxygen are both indivisible, flammable gases. The bond together to form
H20 or water, a clear liquid that puts out fires Explain how this happens.
Using the information in the data table, construct a line graph on the grid provided following the directions
below.
-- Mark an appropriate scale on each labeled axis.
-- Plot the data from the data table. Surround each point with a small circle and connect the points.
Example:
Problems Based on Graphing Set Two
1. The time it takes for the number of leaves to increase from 15 to 30 is approximately
(1) 2.0 days (2) 2.3 days (3) 2.9 days (4) 3.2 days
2. Using a complete sentence, state what would most likely happen to the production of oxygen
by duckweed plants if the intensity and duration of exposure to light were increased.
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