Observation of Chemical Change
Laboratory Report
Title: Observation of Chemical Change
Course: General College Chemistry
Purpose
This experiment examines the reactions of common chemical s contained in consumer products. The purpose is to observe the macroscopic changes that these chemicals undergo. The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products.
Procedure
We do not have the ability to see with a naked eye individual atoms and molecules reacting during chemical changes, however there are indicators that we can observe that give us the ability to understand what is happening. In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions.
Using a pipet two drops each chemical was deposited into the 24-well plate.
The chemical mixtures are noted below in the Data Tables.
Data Tables and Observations
Question/ Well Number
Chemicals
Reactions/Observation
A / A1
NaHCO3 and HCL-CO2
Formation of gas bubbles were immediate and consistent for some time. No color change, clear. Easier to see under black paper.
B / A2
HCI and BTB
After adding BTB the color automatically changed to a copper color. The color was more pronounced under the white piece of paper.
C / A3
NH3 and BTB
Color was almost Identical to BTB, dark blue. I expect BTB to turn orange with an acid and blue with a base.
D / A5
HCI and Blue Dye
Automatically turned a dark green. More pronounced with white paper.
E / A6
Blue Dye and NaOCI
The initial reaction was a light blue color, then when one drop of HCL was added it first became clear then turned a yellow/orange color. That yellow stayed concentrated at the top segregated.
F / A7
NaOCI and KI
Automatically turned brown and when the starch was added it turned black.
G / A11
KI and Pb(NO3)
Automatically turned a cloudy
Title: Observation of Chemical Change
Course: General College Chemistry
Purpose
This experiment examines the reactions of common chemical s contained in consumer products. The purpose is to observe the macroscopic changes that these chemicals undergo. The goals of the experiment observe properties of chemical reactions and to associate chemical properties with household products.
Procedure
We do not have the ability to see with a naked eye individual atoms and molecules reacting during chemical changes, however there are indicators that we can observe that give us the ability to understand what is happening. In this experiment there were fourteen different chemicals of which were mixed with each other twelve different times and I observed there reactions.
Using a pipet two drops each chemical was deposited into the 24-well plate.
The chemical mixtures are noted below in the Data Tables.
Data Tables and Observations
Question/ Well Number
Chemicals
Reactions/Observation
A / A1
NaHCO3 and HCL-CO2
Formation of gas bubbles were immediate and consistent for some time. No color change, clear. Easier to see under black paper.
B / A2
HCI and BTB
After adding BTB the color automatically changed to a copper color. The color was more pronounced under the white piece of paper.
C / A3
NH3 and BTB
Color was almost Identical to BTB, dark blue. I expect BTB to turn orange with an acid and blue with a base.
D / A5
HCI and Blue Dye
Automatically turned a dark green. More pronounced with white paper.
E / A6
Blue Dye and NaOCI
The initial reaction was a light blue color, then when one drop of HCL was added it first became clear then turned a yellow/orange color. That yellow stayed concentrated at the top segregated.
F / A7
NaOCI and KI
Automatically turned brown and when the starch was added it turned black.
G / A11
KI and Pb(NO3)
Automatically turned a cloudy