ELEMENT OR COMPOUND?

1
ELEMENT OR COMPOUND?
Pg. 34 of IAN

• Read pages 62-64 in Focus on Physical Science.
• Define the following terms
• element
• atom
• chemical bond
• molecule
• compound

2

• What does a chemical formula show?
• A chemical formula shows the elements in a
  compound and the ratio of atoms.
• What happens when elements are chemically
  combined?
• They form compounds having properties that are
  different from those of the uncombined elements.

3
RULES for COUNTING ATOMS
Using the chemical formula, 1. List the
elements. 2. Use subscripts for elements
atom number 3. If no subscript,
only one atom of that element 4.
Parentheses subscript applies to all
elements inside
4
ROTATION LAB Record the name of matter in the
first column, and write the formula in either the
element or compound column as appropriate
Pg. 33 of IAN
NAME ELEMENT COMPOUND
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