8 Backyard Science Experiments for Kids
Photo:
Credit: Buggy and Bunny
Make a penny turn green
This post from Buggy and Bunny includes a free printable graph to record scientific observations. Turning a copper penny green is a simple yet rewarding experiment that is great for any kid older than age 3. Kids can observe the pennies over several days and track the color changes.
Science lesson: The acid in the vinegar helps oxygen in the air react more quickly with the copper metal. The green color is a compound called malachite.
