Equations, Balancing Equations and Equation Types
Unit 6: Objectives (representing chemical change—reactions)
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Describe chemical changes in terms of rearranging atoms to form new substances.
Apply the conservation of mass to chemical reactions.
Describe chemical reactions in terms of macroscopic observations (evidence of reaction).
Use particle diagrams to describe chemical reactions.
Balance equations that represent chemical reactions.
Translate between symbolic and word equations.
Explain that the coefficients in a chemical equation describe the quantities of
 the individual atoms or molecules involved
 the moles of the substances involved
8. Observe basic patterns in the way substances react and learn to generalize them to other
reactions students encounter.
 Synthesis reactions
 Decomposition reactions
 Combustion reactions
 Single replacement reaction
 Double replacement (ionic) reactions
9. Describe endo- and exothermic reactions in terms of storage or release of chemical energy.
10. Describe the role of energy in the breaking /forming of chemical bonds.
Equations, Balancing Equations and Equation Types
Unit 6: Objectives (representing chemical change—reactions)
If you need extra help in balancing equations:
1. http://education.jlab.org/elementbalancing/
2. http://www.khanacademy.org/science/chemistry/chemical-reactionsstoichiome/balancing-chemical-equations
3. http://www.sophia.org/tutorials/balancing-chemical-equations--5
4. http://science.widener.edu/svb/tutorial/rxnbalancingcsn7.html
5. http://misterguch.brinkster.net/eqnbalance.html
There is a science tutor every block in room 334. You can always make arrangements with me to
come in before or after school.
Equations, Balancing Equations and Equation Types
Unit 6: Objectives (representing chemical change—reactions)