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Pysical Chemical Lab Report

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Design Your Own Physical and Chemical Change Lab Report Emma
Melina
March 11th, 2011
Purpose: To determine whether the following combinations of chemicals produce chemical or physical reactions.

Hypothesis: If the following combinations of chemicals are mixed together, then they will produce mostly chemical changes.

Materials: -2 metal 1g spoons
-calcium chloride (CaCl)
-baking soda (NaHCO3)
-phenolphthalein
-bromothymol blue
-plastic bags
-distilled water
-graduated cylinder

Procedure: 1. Add combinations from the observation table into baggies and mix together.
2.Record observations.

Observations:
Legend:
Amount unless otherwise specified:
Distilled water- 5ml
Calcium Chloride-1g
Baking soda-1g
Bromothymol blue (Bb) -2 drops
Phenolphtholein (P)-2 drops

#
Combinations of Chemicals
Before
After
1
Distilled water, CaCl, NaHCO

-fizzy -milky-coloured -bubbles -dissolved -warm
2
Distilled water, CaCl

-cloudy -did not dissolve, CaCl settled at bottom
3
Distilled water, NaHCO

-dissolved -warm, then cold -cloudy, then clear
4
Distilled water, CaCl, NaHCO, Bb

-cold -fizzy -slightly bubbly
5
Distilled water, CaCl, NaHCO, P

-same as #6
6
Distilled water, CaCl, NaHCO, P, Bb

-bubbly -very cold -milk-white -opaque
7
Distilled water, CaCl(2g), NaHCO(0.5g), Bb

-loud fizzy noise -bubbles -fizz -white -opaque
8
Distilled water, CaCl(2g), NaHCO(0.5g), Bb, P

-same as #9
9
Distilled water, CaCl(2g), NaHCO(0.5g), P

-fizzy -milk-white/yellow -semi-cold -opaque
10
Distilled water, CaCl(0.5), NaHCO(2g), Bb

-very cold -fizzy -bubbles -white
11
Distilled water, CaCl(0.5), NaHCO(2g), Bb, P

-very cold -white -opaque -more liquid than bubbles
12
Distilled water, CaCl(0.5), NaHCO(2g), P

-slightly cold -very bubbly -almost clings to side of bag when squeezed -white
13
Distilled water, CaCl, Bb

-light blue -dissolved
14
Distilled water, CaCl, Bb, P

-slightly cloudy -yellow
15
Distilled...

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