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by BlastRoom
Students identify solutes and solvents and compare concentration and dilution in aqueous solutions.
#us_grade_7_science
20 questions
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A student stirs 5 g of sugar into 100 mL of water until the liquid is clear. In this solution, what are the solute and solvent?
A lab group dissolves table salt in water to make a clear saltwater sample. What role does the salt have, and what role does the water have?
A student mixes drink powder into 250 mL of water until no powder is visible. In the drink solution, which substance is the solvent?
Blue copper sulfate crystals dissolve in water and make a clear blue liquid. In this solution, what is the solute?
Instant coffee granules are stirred into hot water until the liquid is evenly brown. What are the solute and solvent in this coffee solution?
Fertilizer crystals are dissolved in a watering can full of water for plants. In the aqueous solution, what is the solvent?
A student dissolves 2 g of baking soda in 100 mL of water for an investigation. What is the baking soda in the solution?
A few drops of food dye spread evenly through a beaker of water. In the colored solution, what are the solute and solvent?
Cup A has 10 g of salt in 100 mL of water. Cup B has 5 g of salt in 100 mL of water. Which cup is more concentrated?
Beaker A has 8 g of sugar in 200 mL of water. Beaker B has 8 g of sugar in 100 mL of water. Which solution is more concentrated?
Cup A has 15 g of drink mix in 150 mL of water. Cup B has 10 g of drink mix in 100 mL of water. How do their concentrations compare?
Solution A has 20 g of sugar in 250 mL of water. Solution B has 10 g of sugar in 250 mL of water. Which solution has the greater concentration?
Two cocoa drinks each contain 9 g of cocoa powder. Cup A has 100 mL of water, and Cup B has 300 mL of water. Which drink is more concentrated?
Jar A has 4 g of salt in 50 mL of water. Jar B has 6 g of salt in 100 mL of water. Which jar has the more concentrated solution?
A student adds 200 mL of water to a cup of tea solution without adding more tea. What happens to the tea solution?
A sports drink is too strong, so a student adds water but no extra powder. What change happens to the concentration?
A beaker contains saltwater. A student adds only water and stirs. What happens to the amount of dissolved salt in the beaker?
A lemonade solution tastes very sour. The student adds 300 mL of water and no more lemon mix. How will the lemonade likely taste?
A class adds 400 mL of water to a blue dye solution without adding dye. What happens to the dye concentration?
A student makes syrup by stirring sugar into water instead of letting it sit. Why does the sugar dissolve faster when stirred?
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20 questions
