One more edition of “Celebrating Chemistry” from the American Chemical Society to round out the week… this one on chemistry’s role in growing, preserving and making food safe. “Celebrating Chemistry” is designed to engage and educate children (Grades 4th – 6th) in the basic principles of chemistry, and is full of interesting information, activities and hands-on experiments for your homeschool use.
From the introduction:
The world population is estimated to be about 7.5 billion people, and growing by about 1.1% per year. That’s a lot of mouths to feed! But there is other work to be done, too. Just like you, these people need a place to live, which means there will be less land available for agriculture … and that means we can’t grow as much food!
So, how are we going to feed all these people? Chemistry can help. Chemical analysis of the soil can tell farmers which nutrients are needed and how much of them to use. Chemists can also tell when too many nutrients have been used, and where the extra nutrients travel to. There are also chemists who develop herbicides and pesticides to help keep the crops safe. Of course, these chemicals also have to be safe for farmers and their families, and also for the people who eat the food. The same chemists also work to make sure that the nutrients don’t harm helpful animals, such as bees and butterflies.
To download this PDF ebook, RIGHT CLICK HERE and “save link” to your computer. Mac users, press the “control” key then click the link and save to your mac.