Chalk and Vinegar

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by 20skim564d4a5d2da36
Last updated 5 years ago

Discipline:
Science
Subject:
Experiments
Grade:
8

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Chalk and Vinegar

Chalk and Vinegar

Chalk

1. I found out the molecular formulas for chalk and vinegar. 2. I Build molecular models of the molecules. 3. I predicted the reaction. 4. I took photos and sketches

Vinegar

CaC2H3O2+Co2+H2O

Procedure for Day 1

1. I got one gram of chalk. 2. I got plenty, but not too much of vinegar. 3. Weigh the vinegar before adding. 4. Start adding vinegar slowly to the chalk.

5. When the reaction is completed, weigh the vinegar again. 6. Write down the difference between the weight of the vinegar before and after.

Procedure for Day 2

Day 1

A Perfect Reaction

Made by Seung Wan

Experiment conducted by Seung Wan Kim and Hannah Wagner

When putting vinegar into chalk, white bubbles started to form and the vinegar became white.It takes up more vinegar than baking soda to make a complete reaction. (63.2g of vinegar) The reaction is complete when the liquid is transparent.To find out if it is a perfect reaction, you split the liquid to two beakers. In one of them you pour in chalk and in the other beaker you put in vinegar. If the beaker with the extra chalk reacts, there is too much vinegar, if the beaker with the extra vinegar reacts, there is chalk leftover.

Day 2

CaCO2(Chalk)+C2H4O2(Vinegar)=                                                                       CaC2H3O2+Co2+H2O Co2= Carbon Dioxide H2O= Water

2

Two moleculesof vinegar is neededFor one moleculeof chalk


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