Lab

Baking soda and vinegar

Sophia 8A 27 November 2011

Guiding question: How does the amount of baking soda affect it’s reaction with vinegar?

Hypothesis: I think that when we change the amount of the baking soda the reaction will become bigger. And the baking soda will make it react.

Variables: are variables were the vinegar we would always keep it at 20ml we never changed it but what changed was the amount of baking soda.

Exploration:

Materials:

Vinigar: 20ml

Baking soda: changes

Scale

Graduated cylinder

Cup

Procuduer: we first decided on what we would test then we got the materials’ and then we had to decided how we would do it e decided that the vinegar would stay the same and the baking soda powder would change so then we got a scale and weight the baking soda in a cup and then we would pour the vinegar in the cylinder always 20ml and then we would time the reaction and then we would recorded it in are notebook.

Record and analyze: first there were a lot of reactions one of them was that in most of them it would spill out but like in the last ones that we tested it stayed in the bottle but it made bubbles and it was fuzzy whit a lot of bobles.it would go out of the bottle and in the bottles.

Baking soda and vinegar observations

Amount of baking soda	Observations’ /during/before	Time (sec)
5g	It raised and then it become clear and foamy	32.5
10g	It had a lot of foam and it made bubbles and it raised up more quickly than last time	29.12
20g	It raised up but it did not spill it made a lot of bubbles and it was fuzzy.	23.22
30g	It stayed in the cylinder but it made bubbles and it was fuzzy.	20.94
40g	Fuzzy bubbly and it did not spill but It made a lot of bubbles.	17.93
2g	It spilled out it made bubbles and then it went low again.	We did not calculate it.

Analysis of data: there were patterns in this lab we did because if you go to the graph you see on the graph because in some of them it spills and in some others it did not spill. In these patterns there were some same and some different the pattern was that it made bubbles and it was fuzzy and it would spill.

Conclusion: How does the amount of baking soda affect its reaction with vinegar? Well the experiments’ went fine in most of them it would spill and it would make bubbles and become fuzzy. The variables were to change the amount of baking soda and keep the amount of vinegar the same the whole time. we concluded that the baking soda reacting whit the vinegar work but as we went through are lab as we added more baking soda to the vinegar its reaction would change as more we added it spieled less at the end went we put 40g it did not spill or went we put 2g it did spill the 2g were to try and see if it was working or not at the end it did work. in one part it is and in one it is not my hypothesis was sort of wrong and right because more we added it reacted less and less we added the reaction would become bigger so it was the contrary.

Further inquiry: the data is a correct data I think there were no errors but me and my partner thought that there was an error because more we added of the baking soda to the vinegar it would react less I think that if we would have tested more it would have given us more results and maybe better ones. One question have is why did it do the contrary than I thought.