Think Ink - The Clock Reaction

A brand new chemistry for the classic iodine clock reaction

(4 Reviews)

Usually ships out the next day.

Recommend for 10 years & up with adult supervision.

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Description
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Two clear liquids are mixed together and the audience is told to watch closely... "Don't take your eyes off the liquid or you'll miss it!" Then, in a flash, the clear water changes to ink (or so they think!). Think Ink! illustrates the amazing chemistry behind the classic clock reaction where molecules meet up and change over time to create this startling reaction. Unlike the classic iodine clock reaction from your high school chemistry class, our new Think Ink! formula uses a kitchen chemistry approach to achieve even better results. And yes... this is the same reaction that Steve Spangler shares in his live performances and recently featured on the Ellen DeGeneres Show.

What's included?

This kit includes enough materials to do the Think Ink demonstration 30 times!

2 Mega Test Tubes and Rack
Timing Mixture
Trigger Powder
Starch pellets
Recycling Powder
3 White measuring scoops
2 Stirring rods
1 Pair of safety glasses

What does it teach?

The Think Ink! kit helps teach the following chemical concepts...

Rate of reaction as a function of temperature
Rate of reaction as a function of reactant concentration

Classic Iodine Clock Reaction

Would be a great product if it lasted.

J Snyder - January 3, 2012

This user gave 1/5 stars

I used this product last year and the kids loved it. I am now teaching my unit on chemical reactions for this year and noticed it does not work. Same observations as another review here, the timing and trigger powders were clumped together and I saw no reaction after numerous attempts. This is disappointing as I have to purchase all of my supplies for my classroom and was hoping this would last a few years.

It Works!

Yuri Camberos - April 12, 2011

This user gave 4/5 stars

Bought this back in December to practice with and have the kinks worked out (just in case) before I needed it in April. Well, it's April and I'm barely practicing with it today. The kit had been lying on my shelf since December and the trigger and timing powders were clumped together in the position they had been lying in all those months, but a bit of shaking and they were powders again!
I was worried the experiment wouldn't be successful because of all those months it wasn't in use, but it worked beautifully! And I have it done it (from ink and back) three times now and I can't wait to see the excitement on my Sunday School kids' faces when they see this!

Not so good

Penny Halder - March 3, 2011

This user gave 1/5 stars

I love the concept of this idea but the shelf life is awful. The first time I tried it, it worked. The second time, we tried all sorts of ways but it didn't work again. I told the Spangler staff about it and they sent out another one. I didn't open it right away. Weeks later I did and tried it with my grand children. The powders were all stuck together and the experiement did not work. I am very disappointed in this product.

Penny,
We are extremely sorry about the issues you experienced with your Think Ink Kit. One of our customer service representatives will be contacting you very soon to try and resolve the problem. Again, we are extremely sorry.
-Steve Spangler Science Web Team

GREAT experiment!

Jenny Brown - July 21, 2010

This user gave 5/5 stars