Chemical vs Physical Change Lab
Chemical Changes VS Physical Changes
Lab Report
(Full Name)
3rd period
Purpose: To observe the difference between chemical and physical changes.
Materials:
* * Hot plate * Water * Salt * Evaporating dish * Candle * Matches * Ammonium hydroxide * Watch glass * Phenolphthalein * Paper towel * Cornstarch * Iodine * Cup * Alka-Seltzer tablet * Pipet * Milk * Vinegar * Copper II sulfate * Lead II nitrate
Safety: * Goggles were worn. * Aprons were worn. * Lab station was cleaned up directly following experiments. * Hands were washed after experiments. * No eating or drinking took place in the lab. * Experiments were not conducted alone.
Procedure:
* Experiment 1: Put a small amount of water into the evaporating dish. Dissolve a small amount of salt in the water. Put the evaporating dish on the hot plate and heat slowly (level 5) until all of the water has evaporated. Record your observations on the chart. * Experiment 2: Take the candle that your group was given and light it. Observe the candle for a couple of minutes and record your observations on the chart. * Experiment 3: Place five drops of Ammonium hydroxide to the watch glass. Add two drops of Phenolphthalein. Record your observations on the chart. * Experiment 4: Get a paper towel and tear it into 20 pieces. Record your observations on the chart. * Experiment 5: Put a small amount of cornstarch into a cup. Add a small amount of water to the cornstarch. Add two drops of iodine to the cup. Record your observations on the chart. * Experiment 6: Put a little bit on water into a cup. Add half of an alka-seltzer tablet to the water. Record your observations on the chart. * Experiment 7: Put three pipets full of milk into the watch glass. Add two pipets full of vinegar to the milk. Observe for several minutes. Record your observations on the chart. * Experiment 8: Put
Lab Report
(Full Name)
3rd period
Purpose: To observe the difference between chemical and physical changes.
Materials:
* * Hot plate * Water * Salt * Evaporating dish * Candle * Matches * Ammonium hydroxide * Watch glass * Phenolphthalein * Paper towel * Cornstarch * Iodine * Cup * Alka-Seltzer tablet * Pipet * Milk * Vinegar * Copper II sulfate * Lead II nitrate
Safety: * Goggles were worn. * Aprons were worn. * Lab station was cleaned up directly following experiments. * Hands were washed after experiments. * No eating or drinking took place in the lab. * Experiments were not conducted alone.
Procedure:
* Experiment 1: Put a small amount of water into the evaporating dish. Dissolve a small amount of salt in the water. Put the evaporating dish on the hot plate and heat slowly (level 5) until all of the water has evaporated. Record your observations on the chart. * Experiment 2: Take the candle that your group was given and light it. Observe the candle for a couple of minutes and record your observations on the chart. * Experiment 3: Place five drops of Ammonium hydroxide to the watch glass. Add two drops of Phenolphthalein. Record your observations on the chart. * Experiment 4: Get a paper towel and tear it into 20 pieces. Record your observations on the chart. * Experiment 5: Put a small amount of cornstarch into a cup. Add a small amount of water to the cornstarch. Add two drops of iodine to the cup. Record your observations on the chart. * Experiment 6: Put a little bit on water into a cup. Add half of an alka-seltzer tablet to the water. Record your observations on the chart. * Experiment 7: Put three pipets full of milk into the watch glass. Add two pipets full of vinegar to the milk. Observe for several minutes. Record your observations on the chart. * Experiment 8: Put