Do Now:
Please copy today’s homework into your agenda.
Homework:
Complete the Key Concept Builder Worksheet handed out in class for tomorrow.
Today’s Lesson:
Chemical Reactions, Formulas, and Equations
Define Chemical Reaction
Signs of Chemical Change
Unexpected Color change
Energy Changes
temperature
light
not light bulbs -
lightstick
firefly
electricity
Battery
Precipitate Formation
solid produced out of a liquid solution
Gas Formation
not boiling -
new gas produced with different identity only
Chemical Reactions all have
reactants
energy
exothermic
endothermic
products
Chemical Equations