Australian Geographic Forensic Science Lab; Find The 'Poison'

 Show: Find The 'Poison'

Hi everyone! Today we are going to have fun with poison!

It all starts with some sodium bicarbonate. Sodium bicarbonate is a harmless chemical found in baking soda and is what makes cakes rise. When sodium bicarbonate mixes with some water, it doesn't do anything. Only the effect with universal indicator paper is different.

Now another thing we need is some citric acid. Again citric acid  is another harmless chemical found in citrus fruit. 

Both of these aren't real poison, but if we mixed real poison, that would be too dangerous for kids.

When Sodium Bicarbonate is mixed with indicator paper, it turns into a greeny/ bluish colour. This means it is alkaline, which is from colour no. 8-14.

But when Citric acid is mixed with indicator paper, it turns into a reddish/ yellowish/ greenish colour. This means it it acidic, which is from colour no. 1-6.

However, when water touches indicator paper, it turns into a lightish green colour. This indicates Neutral, which is about no. 7.

This experiment is very interesting because you can discover some new ways to know which poison is which. I learnt from the experiment that the pH scale and indicator paper that you can measure how strong acidic or alkaline it is.

This is the video to my experiment:

How to make the Poison experiment:

You will need:

-3 sample tubes

-Universal indicator paper

-Citric acid

-Sodium bicarbonate

-Water

-Gloves/ Tweezers

Cut the indicator paper while holding on with gloves/ tweezers. Do not use hands, microbes on human skin can effect the paper.

Instructions:

1. Add half a tablespoon of citric acid to one sample tube, half a tablespoon of sodium bicarb to another.

2. Leave the third tube empty.

3. Three quarters fill all the tubes with water.

4. Shake all the tubes with the lids on, until all the crystals have disappeared.

5. Get 3 pieces of indicator paper out, and dip each in the tube, and pull out immediately. Wait 10 seconds to let the colour to develop.

Australian Geographic Magic Science Show; Hologram Video

Show: Magic Hologram Video

Discovered: Mr. Dircks (1500's)

Hi everyone! I just made a Magic hologram Video! It was really fun! I really liked the part when it had come up to the 3D Hologram. When it comes out, it displays a 3D hologram of the picture you chose.

You first have to have a video of a hologram (4 identical pictures in a circle) below:

One picture on each side, turning like a circle.  

All the pictures have to be the same!

You then can put a clear plastic pyramid on top.

This kind of plastic pyramid is special! It is specifically designed for projects like this. 

The pyramid has 4 sides, each side with a triangle = When one picture shines on to the pyramid, all the other sides shine on as well and the picture goes through the clear pyramid. Since all the pictures are all the same, it joins together to make it look like a 3D picture. It looks bright and it looks very cool! You have to look at it from the side, not from the top for it to work.

I really liked doing it, because the process was also fun! I'll show you how to do it at the end.

Here is the video of my amazing hologram:

How to make a hologram:

Materials:

• Plastic pyramid
• Dark room
• Hologram video (Search on You tube on a smartphone for "Free Hologram Video")

Steps:

1. Place the phone in the the dark room.
2. Put the pyramid on the phone.
3. Press play.
4. If you look from the side, you should be able to see a wonderful 3D image of what the video is about!