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Blood as a Solution (continued)
Standards:
Tennessee State Standards:
• PSCI.PS1: Matter and Its Interactions
3) Construct a graphical organizer for the major classifications of matter using composition and separation techniques.
8) Identify acids and bases as a special class of compounds with a specific set of properties.
• CHEM2.PS1: Matter and Its Interactions
15) Explain common chemical reactions using qualitative and quantitative information.
CHEM2.PS2: Motion and Stability: Forces and Interactions
6) Compare and contrast the strength and dissociation of strong and weak acids and bases by calculating the pH
and percent ionization of a solution.
7) Research, investigate, and mathematically explain buffer systems (characteristics and capacities using the
Henderson-Hasselbalch equation) and polyprotic acids.
Materials:
The instructional materials needed for this lesson are the SMARTBoard, worksheets and Microscopes with applicable blood slides.
Students will need the Cornell Notes template, something to write with and something to color the worksheet with.
Vocabulary:
• Acid— A molecule or other entity that can donate a proton or accept an electron pair in rxns.
• Base— A molecule or other entity that can accept a proton or donate an electron pair in rxns.
• Buffer solution— A solution that resists changes in pH when acid or alkali is added to it
• Homeostasis— A state of balance within the human body
• Heterogeneous mixture— A mixture that is different particles throughout
• Homogeneous mixture— A mixture that has the same particles throughout
• Suspension— A mixture in which the particles settle to the bottom
• Colloid— A mixture in which the particles are so tiny that light can't pass through
• Tyndall Effect— Light scattering by particles in a colloid or in a very fine suspension
• Solution— A liquid mixture in which the solute is uniformly distributed within the solvent
• Solute— The substance in which the solute is dissolved into
• Solvent— The substance that is dissolved in the solvent
• Solubility— The likelihood and ability for the solute to dissolve
• Concentration— The amount of a substance contained within a solution
Step-by-Step Procedure:
• Engage:
• At the beginning of class, students will answer a bell ringer question and watch two short videos about the Tyndall Effect
and human blood.
Activity: Duration: 5 mins
Watch (0:00–3:25 mins) [3]: https://youtu.be/XxZAphuQ7zQ
Watch (0:00–7:15 mins) [4]: https://youtu.be/j2-BGTmuZjU
