Scientific Report!

 Kia Ora,

In writing for the past couple weeks we've been writing a scientific report about our ice experiment. We did an experiment on which powdered substance would melt/eat away at ice quicker then salt because, we know that salt eats away at ice pretty fast. This is my scientific report:             

Wondering: I know that salt eats away at ice but is there any other powder substance that will work quicker.

Hypothesis: I think that baking soda will work faster because it bubbles when put onto a wet substance.

Materials:                                                          

¼ Salt

¼ Baking Soda

¼ Citric Acid

¼ Sand

¼ Sugar

5 Containers

A Cup

½ cups of frozen Water in each container 

Spoons

Timer 

Flat surface

Even temperature
Camera   

Variables:

Dependant: The reaction of the powdered substances on the ice

Controlled: Amount of water/ice, size of container and amount of powder

Independent: The powdered substances 

Procedure:

1. Put ½ a cup of water into 5 containers.            

2. Put them in the freezer at the same time overnight, then in the morning take them out.

3. Measure out ¼ a cup of each powdered substance then sprinkle them on top of the ice.

4. Observe and time

Results/Observations:

The salt started eating away at the ice pretty much straight away and the sand wasn’t really doing anything at the beginning but then the ice started melting and the sand didn't really do anything, the sugar started melting into it straight away but the salt took over.

Conclusion:  

The salt ate away at the ice faster than any other substance. The hypothesis was wrong, we thought that the baking soda would work better because when you add it to a wet substance it bubbles and starts to fizz up and dissolves into it, therefore causing it to melt the ice. The baking soda didn’t do anything at the beginning but then the procedure started to speed up but still didn’t beat the salt. As soon as we sprinkled the salt on top it immediately started eating away and when we tried to spread it out we couldn’t because it was already melting into it. The sand didn’t really do anything it just sat on the ice, but when the ice started melting the sand absorbed it and turned into slush. The citric acid did start melting it’s way through the ice and started to speed up but then the salt took over. This experiment is like when you put salt over ice it stops it from freezing so therefore when you go outside you won’t slip on the ice. 

Thanks for reading :)

Hope you have a good rest of your day!!