Mississippi Science CHE.8.6
The Standard
- CHE.8
- Students will demonstrate an understanding of the nature of properties of various types of chemical solutions.
Design, conduct, and communicate the results of experiments to produce a specified volume of a solution of a specific molarity, and dilute a solution of a known molarity.
2026 Mississippi College- and Career-Readiness Standards for Science · Solutions
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students calculate the mass of a solid or the volume of a stock solution needed for a target molarity and final volume. They prepare the solution, record their measurements, and report how they made it.
What Mastery Looks Like
- A student can make 100 mL of 0.10 M NaCl using 0.584 g of NaCl or 10.0 mL of 1.0 M stock. They add water to a final volume of 100 mL and report the amounts they measured.
Common Misconceptions
- Students may add 100 mL of water instead of adding water until the total volume is 100 mL. They may put grams directly into the molarity formula without converting to moles, or think dilution changes the amount of dissolved solute.
How to Assess It
- Exit ticket: Plan 100 mL of 0.10 M NaCl from solid NaCl (58.44 g/mol) and from 1.0 M NaCl stock. Give the mass or stock volume for each method and say when to stop adding water.
Lesson moves
Ways to Teach It
Weigh 0.584 g NaCl, dissolve it in a beaker, rinse into a 100 mL volumetric flask, and fill to the mark.
Ask: Why does mixing 20 mL of stock with 100 mL of water miss a 100 mL target volume?
Deal pairs stock and target molarity cards, then have them calculate stock volumes for 100 mL batches and check answers with partners.
Hand out a mock water-testing lab order for 100 mL of 0.10 M NaCl, and ask how to make it from 1.0 M stock.
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Printable CHE.8.6 Worksheet
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Related Standards
- P.5.5B.2
Analyze and interpret data to communicate that the concentration of a solution is determined by the relative amount of solute versus solvent in various mixtures...
- CHE.8.1
Use mathematical and computational analysis to quantitatively express the concentration of solutions using concepts such as molarity, percent by mass, and dilut...
- CHE.8.5
Use mathematical and computational analysis to analyze molarity, molality, dilution, and percentage dilution problems.
- CHE.8.4
Design, conduct, and communicate the results of experiments to test the conductivity of common ionic and covalent compounds in solution.
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