101 cool science experiments

Cefiro

1book

genre-informational

This book  has all different kinds of facts.my favourite experiments is thirty second. Did you no the surface of the earth is 75 percent covered with water,of all that water 97 percent of it saltwater. We can't drink saltwater.It is hard and costs a lot of money to take away salt from water  to make it drinkable. Have you ever wanted to make  invisible ink. This is the book to read.

9/10