Back on November 9, we drove down to Indiana to participate in a science fair with some of our homeschool friends. Each of the kids picked a topic or science idea to explore and the made a short presentation to present the night of the fair. It was so much fun and we learned quite a bit also!
Chaeli studied a couple different reactions: physical reactions and chemical reactions.
Yeast and Sugar
When you mix yeast and sugar, they
start to grow. Here is why it happens:
The yeast and the sugar mix together
and they start to puff up. This is
because the two substances are reacting and changing into a new substance
called carbon dioxide. Carbon dioxide that makes soda pop fizzy and is one of
the gases in the air that we breathe.
Diet Coke and Mentos
When you put Mentos in Diet Coke you
get a geyser or an explosion. Here is why it happens:
All the carbon dioxide (or all the
fizz) in the soda is squeezed into the liquid and looking for a way out. It’s
drawn to any tiny bumps that it can grab onto. Those tiny bumps are called
nucleation sites and Mentos are covered in them. Mentos are sprayed with many
layers of liquid sugar and that provides lots of area for bubbles to cling to
the Mentos. As the Mentos sink they
collect more bubbles and the pressure becomes so great that an explosion
happens.
Chaeli then compared these reactions to a spiritual reaction that can take place in our lives.
Sinner and God’s Love
Sinner + God = A new heart
When God comes into a sinner’s life,
there is a spiritual reaction and the sinner gets a new heart. Through faith Jesus changes our character,
our behavior, and our attitudes and we become a saved sinner. The Holy Spirit is the catalyst (something
that assists a reaction but isn’t used up) that helps this change to take place
in a sinner’s life.
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