Sometimes, putting two ordinary things together can make an extraordinary reaction.
What do you think will happen next in each picture?
Do you own anything made from silver?
Sometimes, silver gets dirty. It's easy to clean silver at home.
All you have to do is put it in a bowl with some foil and hot water.
Then, add the baking soda. It works very quickly!
Some balloons float up. These balloons have helium inside.
If you suck in the helium, your voice will sound very funny!
Look what happens when you suck in different gases.
If you ever put Coke and Mentos together, do it outside.
It can get very messy!
Look what happens when you combine these two things.
Try these things yourself!
Exercise
Open the exercise to begin the activity. Follow the instructions in the document.