Experiments help us understand matter. We can observe physical changes and chemical changes by doing experiments. Do you like to do experiments at home? Visit these sites for some wonderful experiment ideas. Remember to always check with an adult before doing an experiment!
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Here is an experiment we did in class called Plastic Milk;
you may want to try it at home.
| Let's get started! First, pour 250 ml. of hot whole milk into a measuring cup. Add 10 ml. of white vinegar. Stir solution. |
{Step 1} |
| No, we're not making coffee or lemonade. Actually we are pouring the milk vinegar solution through a coffee filter. The filter drains all of the liquid and holds the solid material within the filter. |
{Step 2} |
| Almost done! Now lift the coffee filter gently off the filter stand. I know what you're thinking---eeew! If you look closely at the solid material, it reminds you of cottage cheese. Why did this happen? |
{Step 3} |
| Adding the vinegar to the milk solution forced the molecules to rearrange themselves. The liquid molecules drained into the cup while the solid molecules clumped together to form a plastic-like solid. It felt squishy! by JH, Shanks |
{Step 4} |
