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Lab 1: SOLUBILITY

Lab 1: SOLUBILITY. What are solutes, a solvents and a solutions? Does stirring help solutes to dissolve?. METHOD Place one of the candy pieces in your mouth without chewing or moving your tongue around. 2. Record the time that it takes for this candy piece to dissolve.

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Lab 1: SOLUBILITY

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  1. Lab 1: SOLUBILITY What are solutes, a solvents and a solutions? Does stirring help solutes to dissolve? • METHOD • Place one of the candy pieces in your mouth without chewing • or moving your tongue around. • 2. Record the time that it takes for this candy piece to dissolve. • 3. Place a second candy piece in your mouth, this time moving your tongue, but not chewing. • Record the time it takes to dissolve this candy piece. • Place the third piece of candy in your mouth and chew it. • Record the time to dissolve this third piece of candy.

  2. Lab 2: ANOTHER STIRRING PROBLEM How does stirring help solutes to dissolve? • METHOD • Measure 100mL water and place this in a beaker. Prepare two • (2) setups. • 2. In one beaker, add 1 spoonful of sugar. • 3. Record the time it takes to dissolve the sugar. • In the other beaker, add 1 spoonful of sugar. • Stir until the sugar dissolves. • Record the time it takes to dissolve the sugar. Explain your results: Answer the aim.

  3. It All Depends on the Temperature Aim: Why do many substances form solutions more easily in hot water than cold water? • GUIDE QUESTIONS: • How does the temperature seem to affect the rate of mixing? • How is the warm solution different from the cold one? • Describe what is happening in terms of particle movement. • Draw a dot sketch of each solution. Use more dots to show areas where there is a high concentration of food coloring and fewer dots for low concentration. Materials: 2 small beakers hot water food coloring • METHOD • Fill one beaker with cold water. • Fill the other beakers with hot water. • Wait one minute for the water to calm. • Add one drop of food coloring to each. • Record your observations over the • next 5 minutes. • Note: DO NOT MOVE THE BEAKERS

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