Solubility Experiment - Hurumanu - Science

Aim: We are going to find out whether salt dissolves faster or baking soda (solute) in water (solvent).

Hypothesis: 

I think that salt dissolves faster than baking soda since the source of salt comes from ocean water and ocean water has around a quarter of saltwater in it. 

Equipment:

• A 250mL beaker
• 100mL measuring cylinder 
• salt
• baking soda
• a stirring rod
• a teaspoon
• ruler (that we'll be using later on since we don't need it at the moment)

Method/Steps

1. Fill the 250mL beaker with 100mL water.
2. Add a teaspoon of baking soda, to derive the right amount of baking soda, run your ruler across the edges of your teaspoon.
3. Stir the solute into the solvent until it is dissolved.
4. Repeat step 2 and 3 until the solute which is the baking soda is dissolved.
5.  Record the amount of baking soda that was added.
6. Repeat the steps with the table salt.

Results:

Solute	Number of teaspoons that dissolved in 100mL of water
Baking Soda	15
Salt	22

Discussion: 

This experiment is about dissolving two types of solutes in water which was our solvent. It's also about investigating which one dissolves faster, baking soda or salt.

Conclusion:

My hypothesis was that table salt would dissolve much faster than the baking soda.

This was an easy and chill experiment, I wouldn't say it's fun but it was calm and chill. We didn't do much of an experiment not like ones that you have to mix chemicals, ones that cause explosion and etc.

Our experiment worked well, my hypothesis was right. It was a successful experiment, we were able to learn something new.