notebooks, using complete sentences, describe what happens when you
combine baking soda and vinegar?
Chemical reaction, CO2 is released after Carbonic acid is created.
The students I teach range from the 6th grade to the 12th
grade. The population is predominantly African American (>93). The next
largest group is Latino. According to our students FDA is very
challenging but is also very distracting. Our students have a general
apathy toward the school probably because of its authoritarian
philosophy. Notwithstanding, we never have the levels of violence that
is seen at other schools in the city.
a. Compare the difference between mixtures and
b. Describe how pH determines how acidic and basic a
c. Determine the importance of pH in the natural
d. Narrate what pH means to you and how you think it
affects the world.
mixture, solution, solute, solvent, enzymes, chemical reaction, base, acid,
hydrogen ion, hydroxide ion, neutral
PowerPoint presentation “What is pH?”
plastic cups x 30
pH meters x 8
storage solutions x 8
squirt bottles x 8
rinsing cups or beakers x 8
printed papers with names of solutions and laminated
calculators x 8
various solutions: baking powder, ammonia, lemon juice, vinegar,
filtered water, bottled water, hydrated lime, strong acid and base
Lesson: (25 minutes)
What is a
chemical reaction? Atoms of molecules
are rearranged when chemical bonds are created or destroyed.
what is a
mixture? Molecules mix but do not
what is a
solution? Molecules mix in a chemical
pH? The measure of hydrogen and
hydroxide ions or equivalents in a solution.
an acid? A solution with more
hydrogen ions than hydrogen ions or their equivalents.
what is a
base? A solution with more hydrogen
ions than hydroxide ions or their equivalents.
examples of acids and bases? Lemon
juice, ammonia, hydrated lime, vinegar, tap water, acid rain, etc.
pH affect a chemical reaction? pH can
speed up or slow down a chemical reaction and enzyme activity.
pH affect the natural world? Because
pH can affect the chemical reactions within an organism it is vital for
life processes such as photosynthesis, respirarion, digestion,
reproduction, growth, development, etc.
Practice: (15 minutes)
How can pH affect you? Write your answer in your
note book in complete sentences. Explain your answers.
Demonstrates an understanding of structure and
properties of matter
Demonstrates an understanding of chemical
Demonstrates an understanding of the impact of
Frames questions to distinguish cause and
effect; and identifies or controls variables.