my conclusion

In conclusion, my experiment which was the concentration of salt and how it affects the boiling point of water was very accurate with my expectations and research. My hypothesis was if adding salt to water is related to the boiling point, adding more salt into the solvent which is the pure water, the temperature will be higher than 100°C. My hypothesis was correct, when I conducted my experiment the more salt included it increased one degree over 100 every time. The highest temperatures were 107°C to 109°C. My experiment was very successful and had reliable results. I could have made a few changes if I had more time by using a bunsen burner, timing the water etc. My aim of my experiment was to prove that the concentration of salt in water will affect its boiling point. 

My results summarised

• For my experiment I did three trials. It took approximately 30 minutes to complete one trial within one day. I started with 20g of salt and went up to 100g. 
• My results were recorded at the end of each 20 g of salt. From my results it is evident that adding 20 grams of salt into 300 mL of water, the temperature went up about 1.5 °C every time.  
• My results also backed up my primary research which had stated that the more salt you put into the water the higher the temperature. 
• My end results were recorded in a table as well as a line graph. 
• These were my results for my first trial: 20g- 101.5 °C, 40g-103 °C, 60g-105.5 °C, 80g-106.5 °C and 100g-107.5 °C. My second results were 20g-102 °C, 40g-103 °C , 60g-104.5 °C, 80g-106.5 °C and 100g-109 °C. Finally for my third trial my results were 20g-103 °C ,40g-105 °C , 60g-106.5 °C ,80-107.5 °C and 100g-109 °C.
•  My trials weren’t very different in degrees and were basically around the same numbers. I had noticed that my second and third trials had increased in numbers than the first one. They were much higher numbers such as 107.5 to 109. 
• For my experiment I also kept getting continuos results for each trial. My investigation is accurate because I did more than one trial. I got constant and very much the same results and my experiment becomes reliable. 

Why my project is relevant to society?

This experiment is relevant to society as many people can use it in everyday cooking. The higher the boiling point of the water mixed with salt it has two important suggestions. Firstly, water wakes longer to boil if it contains salt and secondly, the temperature of the boiling water is much higher. For example adding salt when cooking pasta means it will take longer to boil, but the pasta will cook quickly due to the high temperature. Thus the cooking times are affected by salt in water.

Improvements and problems

•  To improve my investigation, I could have done more trials rather than just three I could have done 5, by doing this it would have made my results more accurate. Also, the amount of salt that I had chosen to do could have been more for example they could have gone up by 40 or 60 grams instead of 20. 
• By doing this, my experiment would have supported my hypothesis and research even more and my results would have been more precise.
• Using a bunsen burner would also benefit the experiment, to have a consistent heat source and by having a constant heat source, you would be able to have the time it takes to boil by using a stop watch. 
• Timing my results would also benefit my experiment, to ensure there will be a change in time for every time I add more salt. From my research the water will take longer to boil at a higher temperature including the solvent which is the salt. 
• If I had some more time I could have extended my experiment further by adding salt to  different types of water  such as distilled water, mineral water, spring water etc or I could have used different brands of salt. 

• The experiment did not come across any problems, the only one little problem occurred while the water was boiling. 
• While I was waiting for the water to boil I had gotten distracted, I had started filling the container with salt for the next trial. I had gotten to the saucepan when it was boiling a lot.
•  I should have watched the saucepan and waited for the water to boil instead of leaving it too long. Other than that little error I was very happy with my experiment and what I had accomplished. 

photographs

Trial 1

Trial 2

Trial 3

My introduction

This term for science, like every other year we have been given a science research project also known as an SRP. We had to design and conduct our own scientific investigation on a topic that interests us. The purpose of this report is to look into my chosen experiment for my science research project. We had been given a list of ideas to choose from. For my experiment, I had done some primary research to look further into some selected plans and I decided to do my experiment on the concentration of salt and how it affects the boiling point of water.

My results

Today I conducted all my three trials and recorded my results in a table. These were my results:
Trial 1

Trial 2

Trial 3