Eperiments- Dissolving: Hurrumanu 4

Template for a scientific report 

In Science, whenever we do an experiment we will blog it. The way that we blog an experiment is in the form of a scientific report.

Aim: To find out and see if salt or baking soda dissolve more.

Hypothesis: My hypothesis is that baking soda will dissolve less and will saturate the water much quicker as it is more finely that the salt, therefore, the salt will dissolve more on a faster rate.

Equipment: The equipment that we will be using for this experiment are: 250ml beaker,  100ml measuring cylinder, salt, baking soda, a stirring road, a teaspoon and a ruler.

Method: The following steps are what we will take for this experiment to work:

1. We fill our beaker with 100ml of tap water.
2. After the beaker has been filled, we then add a level teaspoon of our baking soda. A level teaspoon can be achieved by taking a teaspoon of the baking soda and a ruler is then run across its edge.
3. The solution that we have mixed is then stirred, keep the rotation going until all of the baking soda has vanished and dissolved.
4. Steps 2 and 3 are then repeated, it is only after that our solution has saturated and no more baking soda can be added.
5. The number of teaspoons of baking soda is then recorded.
6. The process that we have taken is then repeated for the salt as well.

Results: What did you observe? Either a picture or table of data.

Solute:	Salt	Baking Soda
Number of scoops (science spatula) till saturated:	20	11

Discussion: What do your results mean? Explain your results.

The number of scoops that we incorporated with our water and our solutes; saturating the water with salt was our first experiment and the first observation. The following was the Baking soda which dissolved less and saturated our liquid much slower. The number of scoops of salt that we were able to dissolve in our liquid was 20 scoops--science spatula--instead of a teaspoon; the number of scoops again with the same spatula was much less--11. In the experiment, we have observed that salt was much less fine than the baking soda; which is more chalky and more of a powder texture. It caused the water molecules to be filled up at a much faster rate, and that is why it requires less baking soda for the water to be saturated rather than the salt.

Conclusion: Did your experiment work? Was your hypothesis correct?

In conclusion, salt which somehow dissolves at a faster rate has a better or is better at solubility, it dissolves better than baking soda. We observed and conclude from this experiment that salt dissolves better than baking soda, making our hypothesis correct. Which stated that baking soda will dissolve less.

Conclusion:

I thought it would be a black crystal but it was bright blue and needed a couple of days to form but a very successful experiment!