Part 4 Separating a Dry Mixture – Students separate and mixture of gravel, powder, and salt by using filtering and evaporation. Investigation 2 Reaching Saturation Part 1 Salt Saturation – Students add salt to water until the solution becomes saturated. Students use a balance to determine the amount of salt that went into solution. Part 2 Citric Acid Saturation – Students add citric acid to water until the solution becomes saturated. Students use a balance to determine the amount of citric acid that went into solution. Students compare the solubility of citric acid and salt in water. Part 3 The Saturation Puzzle – Students identify an unknown material by determining the mass it takes to saturate fifty milliliters of water. Part 4 Comparing the Crystals – Students identify and compare citric acid and Epson salt crystals and compare them to salt crystals. Investigation 3 Concentration – Part 1 Soft-Drink Recipes – Students make and compare Kool-Aid solutions that vary in the amount of water to learn the concept of concentration. Part 2 Salt concentration – Students use a balance to determine the relative concentration of salt solutions. Part 3 Mystery Solutions – Students determine the relative concentration of three mystery solutions to determine which is the most concentrated and which is the most dilute. Investigation 4 Fizz Quiz – Part 1 Chemical Reactions – Students look for evidence of chemical reactions by mixing combinations of calcium chloride, baking soda, and citric acid with water and observe changes that occur. Part 2 Reaction Products – Students use filtering and evaporating techniques to separate and study the products of the reactions. Part 3 Reaction in a Zip Bag – Students place combinations of materials from Part 1 and 2 in a Zip Lock bags and observe products of chemical reactions. Part 4 Choosing Your Own Investigation –
Part 4 – Separating a Dry Mixture Students separate and mixture of gravel, powder, and salt by using filtering and evaporation. Investigation 2 Reaching Saturation Part 1 – Salt Saturation Students add salt to water until the solution becomes saturated. Students use a balance to determine the amount of salt that went into solution. Part 2 – Citric Acid Saturation Students add citric acid to water until the solution becomes saturated. Students use a balance to determine the amount of citric acid that went into solution. Students compare the solubility of citric acid and salt in water. Part 3 – The Saturation Puzzle Students identify an unknown material by determining the mass it takes to saturate fifty milliliters of water. Part 4 – Comparing the Crystals Students identify and compare citric acid and Epson salt crystals and compare them to salt crystals. Investigation 3 – Concentration Part 1 – Soft-Drink Recipes Students make and compare Kool-Aid solutions that vary in the amount of water to learn the concept of concentration. Part 2 – Salt concentration Students use a balance to determine the relative concentration of salt solutions. Part 3 – Mystery Solutions Students determine the relative concentration of three mystery solutions to determine which is the most concentrated and which is the most dilute. Investigation 4 – Fizz Quiz Part 1 – Chemical Reactions Students look for evidence of chemical reactions by mixing combinations of calcium chloride, baking soda, and citric acid with water and observe changes that occur. Part 2 – Reaction Products Students use filtering and evaporating techniques to separate and study the products of the reactions. Part 3 – Reaction in a Zip Bag Students place combinations of materials from Part 1 and 2 in a Zip Lock bags and observe products of chemical reactions. Part 4 – Choosing Your Own Investigation
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