chemistry labs

materials: two spoons, two pipets, water, calcium chloride, sodium bicarbonate, phenol red, sandwhich baggies, and saftey goggles.

steps:

1. put your goggles on and get your materials
2. put a spoon full of calcium chloride and a spoon full of sodium bicarbonate in one corner of the baggie.
3. put one pipet of water and one pipet of phenol red in the other corner. ( make sure the liquids dont mix with the powders till later in the lab.)
4. close the baggie tight and shack the bag.
5. after the reaction is done open the bag waft.
6. dispose of everything properly and clean you area

warnings:

1. calcium chloride may iritate the skin
2. phenol red stains

observations:

1. gets hot
2. turns yellow
3. bubbles
4. can hear it fizziling
5. bag fills up with gas
6. cools down
7. turns to orange
8. bag popped
9. smells like the phenol red

lab questions:

1. the calcium chloride got warm when mixed with the liquids and the sodium bicarbonate got cold when mixed with the liquids.
2. the first experiment went from hot to cold but the individual experiments stayed the same temperature.
3. it turned yellow then at the end it turned orange. the sodium bicarbonate turned yellow when mixed with both liquids and turned white when mixed with just water.
4. yes as the chemicals bubbled the color started to change.
5. the controlled experiments that proved we needed a liquid was when i tested the powdered substances with a liquid it had a reaction but if i didnt use liquid there was no reaction.
6. when the baggie filled up with air and fizzled and changed color. they all worked together.
7. mix calcium chloride with water and see what happens.
8. no it does not always mean a chemical reaction occured because if you boil water no chemical reaction took place.