In class activity 1 • Are atoms made of molecules, or are molecules made of atoms?
In class activity 3
In class activity 2 • How does the arrangement of the particles in a solid differ from those in a gas? • Solids have molecules in rigid positions with respect to one another, gases the molecules separate from one another
Physical or Chemical
• What changes in a chemical reaction? • The bonds between the atoms are broken and reformed to combine the atoms into different substances • Physical • In-class activity 4 • Choose which is which
In-class activity 5 • How many atoms are in a sulfur molecule with the formula S8? • eight
Chemical
In class activity 6 • What would be the name of a compound with the formula KF? • Potassium Fluoride • (notice how fluoride is spelled)
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