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Salt: Properties & Separation Methods

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This lesson was recently updated on  

July 2025

This is a required assessment for the Science & Cooking for Educators Program.

Summary of Updates

New Activities:
● Concentration of salt solutions: particle models + graphing density (Lesson 1.2)
● Salt mining video + extracting salt/environmental impact readings (Lesson 1.4)
● Salt composition interactive (Lesson 1.5)

Modifications:
● Now first lesson of year (simplified concepts)
● Notebook-style format
● Updated assessment

Large Scale Changes/Progression:
● Modified this to be the first lesson of the year; science concepts are a bit lighter and more aligned to middle school stanards (intended to ease into school year and assess students' understanding of concepts, lab skills, and practices)

New Activities:
● Density & Salt Concentration Activity: Use as a way to introduce particle models (through modeling concentration of salt solutions) and review density (graph D=M/V) (Lesson 1.2)

● Salt Mine Video + New Readings: Added a new Bite Scized video on extracting salt from a salt mine and new readings on salt solution mining and large scale salt evaporation ponds (to briefly discuss environmental impact and meet HS-ES3-2) (Lesson 1.4)

● Chemical Composition of Salt Interactive: Added new interactive to compare chemical composition of different table salts + flame test (Lesson 1.5)

Modifications:
● Assessment is modified and updated to reflect new changes accordingly.
● Adjusted lesson to use more of a notebook-style format and familiarize students with common templates/structures in their notes (e.g. cause/effect; structure/function)

Classroom Slides & Student Handouts

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Simulations for this Lesson

Equilibrium

Exploring Gases

Magnesium and HCl

Comparing Gases & Liquids

Maple Syrup Video

Umami & MSG (Video)

Elements & Compounds

Exploring Cheeses

Mixing & Polarity

Chlorine & Electronegativity

Sodium in Nature

Salt Composition Analysis

Anthocyanins & Equilibrium

Energy and Fuels

Flavor Compounds in Vanilla

Tea and Temperature

Cathode Ray Experiment

Periodic Table Trends

Elements & Chemical Formulas

Exploring Bond Types

Exploring Steaming

Salts Dissolving in Water

Tea around the World

Electrolyte Drink Analysis

Sodium in Water Video

Types of Fuel

Vanilla & Gas Chromatograms

Modeling Smell

How is Tea Made?

Molecules in Milk

Tea and Energy

Heating a Liquid

Ionization Energy

Salt around the World

Particles and pH

Ammonia & Stoichiometry

Acids in Water

Observe: Vanilla Products

Conduction in Solids Instructional Video

Water's Heating Curve

Trace Minerals in Salts

Exploring Syrups

Comparing Atoms and Ions

Ingredients in Electrolyte Drinks

Periodic Table (Charges, Valence Electrons)

Ions and Charges

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