Purpose: in This Lab You Will Figure out How to Make Sugar Dissolve in Ice Water

Chemistry

Solutions Lab 1

Purpose: In this lab you will figure out how to make sugar dissolve in ice water.

Materials:

Large beaker

Small beaker

Ice

Water

Mortar and pestle

Stirring rod

Hot plate

Directions:

1. Add equal parts ice and water to the large beaker so it is about 70% full.

2. Make at least 4 tablespoons of sugar dissolve in the ice water.

3. In a clean setup add sugar to a beaker with water. Let it sit 5 minutes, then gently tilt the beaker. Look at the interface between sugar and water while you do this.

Write up:

Describe how you made the sugar dissolve in the ice water. Also describe what you see in 3.

Questions:

1. How does each affect the rate of dissolution of a solute? Say whether it increases or decreases it and how the factor either increases the rate at which solute meets solvent or decreases it.

A. stirring/shaking

B. heating

C. cooling

D. grinding the solid solute

E. increasing pressure on a gaseous solute

2. What are you seeing in direction 3?