Growing Crystal Experiment !

 Hi Readers,

In these past couple of weeks we've been making crystals by putting different substances into water, we made one with borax, one with sugar and one with salt. So far we've only looked at the borax crystals because the others need longer. We had to create a slide explaining the procedure the process and stuff like that. I worked with Jhana but she hasn't been here for the past 2 days so we didn't get to finish but here's what we've done so far: 

Thanks for reading :)

Dissolving Scientific Report

 Hey Bloggers, 

In writing this week we done another experiment on with substance will dissolve faster in water. We had to write another report and present it in any way we wanted too. This is my report: 

Wondering: I think that the sugar will dissolve quicker      

Hypothesis: i think that the sugar will dissolve quicker because in warm or hot water it melts because all the sugar grains dissolve into the heat

Materials: 

½ a tablespoon of the following substances:

Sand

Corn Flour

Salt

Sugar

Flour

Citric Acid

A tablespoon

Timer

Beakers

Warm Water

Variables:

Independent:  powdered substances

Control: amount of water

Dependent: the substances dissolving

Procedure:

1. Fill 6 beakers with 80ml of warm water

2. Get ½ a tablespoon and put them into the beakers

3. Time and stir throughout the procedure

4. Observe      

 

Results/Observations:

The citric acid dissolved first, then the sugar and last but not least the salt. The sand, flour and cornflour didn’t dissolve at all. The cornflour and flour turned into a gluey kind of substance instead of dissolving.

Conclusion:

 In conclusion the hypothesis was wrong because the citric acid was the one that dissolved the quickest. The sugar was second because when you put the sugar in the water you can see the sugar but when you mix the sugar and the water molecule together. When sugar is mixed with a warm or hot substance it dissolves into the solvent, for example when you make a cup of tea and you add sugar it dissolves into the tea. The sand, corn flour and ordinary flour didn’t dissolve, the flours turned into a gluey substance and the sand just stayed there.

Thanks for reading :)

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!!