Science-Chemical Reaction Essay

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The purpose of the lab was to find evidence that a chemical reaction had been formed by mixing different chemicals. Signs of a chemical reaction are gases being produced, color change, precipitates formed, or temperature change. Materials used were varieties of liquids, solids and lab equipment. The procedures included observing the solids or liquids before mixing or heating them, how much of each substance should be used, rinse the test tubes after each observation, and finally clean the lab stations after finishing the lab. Observations made in the lab mainly involved color change, rust and gasses being produced. Pairs one and four produced bubbles which meant gasses were being produced, other experiments made rust which made the metals get rough and change color, and other tests changed colors such as numbers one, two, and five.

Reactant #1
Obesrvation
Reactant #2
Observation
Products Formed
1
Copper(II)
Chloride
Blue/Green
Crystals
Energy
Fire
-Brown Crystals
-Pops when dry
-With water turns back to Blue/Green color

2
Sodium
Sulfate
Clear Liquid
Barium Chloride
Foggy Liquid
-Color changes to a milky pure white
3
Copper Wire
Brown solid wire
Energy
Fire
-Burnt parts turn into a blue/ grey
-After scraping it turns back to the brown color
4
Magnesium
Solid silver colored ribbon
Hydrochloric acid
Clear liquid
-Created gas
-Puts a burning splint and makes a foggy gas
5
Iron Nail
Sharp Silver metal
Copper(II) Sulfate
Blue/Green

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