Science Is Magic – Black Water

This is a Science Experiment by Fanny, Simon and Elisabeth.

PURPOSE:

 

 To be able to turn water into a completely different colour and be able to turn it back into clear.

 

 

OBSERVATIONS: HOW DOES THIS EXPERIMENT ‘LOOK’ LIKE MAGIC?

The water goes from completely clear to dark black in a matter of a few seconds

 

 

MATERIAL LIST:

 

Chemicals

Chemical Name & Formula Amount: grams/milliliters
 Sodium Sulfite (Na2SO3)  0.5g
 Citric Acid (Na2SO3)  0.5g
 Potassium Iodate (KIO3)  0.5g
Water (H2O) 120 mL

 

Other supplies

0.25g Corn Starch  1 small glass jar
2 beakers Measuring spoons
 Mixing rods

 

PROCEDURE: (add any changes that were necessary/made)

  1. Add 120mL of water to beaker #1
  2. Add 1/16 tsp of cornstarch to beaker #1
  3. Stir the water until the cornstarch is mostly or completely dissolved
  4. Add 1/8 tsp of citric acid to beaker #1
  5. Add ⅛ tsp of sodium sulphide to beaker #1
  6. Fill the glass with 20mL of water
  7. Add ⅛ tsp of potassium iodate to the glass
  8. Stir the potassium iodate until it is mostly dissolved
  9. Pour the two liquids into beaker #2
  10.  Wait about 5-10 seconds and watch the magic happen

 

CONCLUSION:

 

At first the reaction was very slow, or would simply not happen at all.  But by some trial and error, we found that the reaction worked best when elevating the tempurature.  The hotter water sped up the reaction, as the particles were moving quicker. Where as when we used colder water, it took longer for the reaction to happen, or it would simply not happen at all, as the particles were moving much slower due to the decrease in tempurature.  Another factor that sped up the reaction was adding more Potassium Iodate there for increasing the surface area, which created a greater chance of collision.  This reaction proves the rate law, as certain factors to speed up the reaction.

 

 

SCIENTIFIC EXPLANATION:

In the first glass, the ionic compound sodium sulfite (Na2SO3) divides itself into two sodium ions (2Na) and a sulfite ion (SO3).

Na2SO3  → 2Na + SO3

This sulfite then steals one of the hydrogens from the citric acid (C6H8O7) in the mixture, creating bisulfate, HSO3.

SO3 + H  → HSO3

In the second glass, the potassium iodate (KIO3), separates into potassium ions (K) and iodate ions (IO3).

KIO3  → K + IO3

When the two glasses are mixed, a number of reactions happen. First, the iodate ions react with the bisulfite (HSO3) to produce hydrogen sulfate (HSO4). This leaves the iodide ions (I) by themselves.

IO3 + 3HSO3 → I + 3HSO4

Then the excess iodate reacts with the iodide ions and hydrogen ions to form iodine (I2) and water.

IO3 + 5I + 6H → 3I2 + 3H2O

By adding more bisulfite into the liquid, it is reduced back into iodide ions, turning the water clear again.

I2 + HSO3 + H2O →  2I + HSO4 + 2 H

Semester Reflection

What are some things you have learned and/or tasks you have accomplished this semester?

At the beginning of semester one I hadn’t worked with the Micro:bits at all. I hadn’t even been in the makerspace. Now I know a lot about Micro:bits and have used a lot of the different tools we have in the makerspace. I also used the 3D printers for the first time and that really helped me develop my knowledge.

What aspects of your work are successful?

I think over the course of the first semester I have become moderately experienced with Micro:bits. I’ve made lots of different projects and experimented with a lot of the different options we have in the makerspace. I think I will improve my Micro:bit expertise even more in the future.

What aspects of your work is challenging? 

There were also a couple challenges with the Micro:bits. I had a little trouble connecting external components to the Micro:bit and get them working. I also had trouble using the code for the output pins. A major struggle for using the Micro:bits was finding a time I was free while the library is open. I have band in the morning and after school so that makes finding time a bit difficult.

What steps did you take to overcome these challenges / what adjustments did you need to make?

The problems with the external components and the output pin codes was resolved by doing research and persevering. I kept trying, researching, and asking for help and eventually figured it out. I ended up finding time for the Micro:bits because I realized how fun they are to work with. I fell in love with them and wanted to spend more time figuring them out.

Is there anything you can do improve?

I want to try to make more complex projects with the Micro:bits with a real use. Right now a lot of the projects I’ve made have been great learning experiences but aren’t all that useful. I’m going to strive to create wonderful and useful Micro:bit projects.

As Riverside continues to immerse itself into innovation and technology, what do you think Riverside can do to provide support and help for teachers and students?

Riverside has a lot of innovative technology that can be very useful if used correctly but a lot of kids don’t know it exists. I think Riverside should try to make the makerspace more welcoming. Before I joined tech team I had no idea what went on in the makerspace and if I was even aloud in there. I think we should educate the students and give them the resources they need to create what they want.

Do you have any feedback or suggestions, as we move forward, that could help the Tech Team meet the needs of our school and staff / be more effective?

I think as Tech Team we should try to help out the students and teachers directly more. I know I could help out fellow students more than I do now. I think that Tech Team could have and overwhelming positive impacted if we connected with the students a little bit more and a little deeper.

Humanity Exposed

Critical Role is a weekly Dungeons & Dragons roleplaying livestream. In Season 2 of Critical Role a group of misfits, called The Mighty Nein, meet in a tavern in the town of Trostenwald. This group of strangers band together to solve the mystery of the monster at the local carnival. After they successfully free the people of the carnival, The Mighty Nein continue to adventure as a group and help people around the continent. While becoming more and more powerful and well known with the general populous, they grow closer as friends and become a family. They face many hardships and losses and stick together as a group against all odds. Through connection, humans can grow stronger and do more than they ever could alone. Critical Role Season 2 shows that connection and communication can be an extremely powerful tool to defeat the evils of the world.

Data Visualisation – Map of Canada

When looking through different data sets on Open Canada I found one titled “Population of Canada, 10km Gridded”. This data set divides Canada into tens of thousands of 10km by 10km squares and then records the population in all of the squares. When I saw this data set I immediately thought about making it a 3D model, but that wasn’t as easy as it sounds. I had to go through many different programs and websites. I was having a lot of trouble but I ended up contacting a developer of one of the programs I was trying to use and he helped me out massively. He guided me through the steps of changing the data into a recognizable 3D model. The model is difficult to print because of how concentrated the population is urban areas.

My raw data is over one hundred thousand individual squares each with their assigned population. I got my data from the Open Canada website. I downloaded the .shp file and converted it into an .stl.

This is a screenshot of a portion of the data.

All of Canada

Ontario and Western Quebec

Maritimes and Northern Quebec

Western Canada

Eastern Canada in Tinkerine

Eastern Canada in progress

Eastern Canada Further Along

Printed Eastern Canada

Printed Western Canada

2 versions of both eastern and western canada.