Investigating State Changes - Matter

Investigating State Changes - Matter

Aim: To observe water as it changes state from solid to liquid and then to a gas.

Equipment: A 250 mL beaker, thermometer, Bunsen burner, heatproof mat, tripod and gauze mat, stopwatch, retort stand and clamp, ice cubes.

Method:

1. Collect enough ice so that your beaker is half full and place the thermometer into it while you set up the rest of the equipment

2. Set up retort stand and clamp alongside the tripod and gauze mat.

3. Place the beaker of ice on the gauze mat and gently clamp the thermometer so that it is held upright and the scale is easy to see. The bottom of your thermometer should be low enough to still be covered by water when the ice melts. but not touching the bottom of the beaker.

4. Record the initial temperature of the ice in the data table below

5. Light the Bunsen burner and start timing with the stopwatch

6. Measure and record the temperature every mite

7. Continue measuring and recording the temperature until the water has been boiling for 2-3 minutes.

Results:

Discussion:

The water began boiling at 80 and the ice completely melted 3-5 minutes. We stopped at 8 minutes when we got up to 100 c. Most of the ice melted fast but then didn't completely melt for about a minute. This was an interesting experiment, the heat would have made the particles in the solid ice move turning it into a liquid. If you didn't know that's how a solid turns into liquid-solid particles don't move but when a particle is heated it moves faster.