Does it Dissolve?

Today, we mixed together different ingredients with our water. Some mixtures dissolved, while others did not. We added 1 tablespoon of citric acid into 100Ml of water. The citric acid broke apart into little pieces when it was mixed with water. You couldn't see the citric acid, but there was still 1 tablespoon of it inside the water. The pieces were so small because they dissolved in the water. The salt also dissolved in the water. The sand, pebbles, oil, and baking soda didn't dissolve.

Look at this picture of lemonade. Some ingredients dissolved in the water, while other ingredients did not dissolve. Which ingredients dissolved, and why? Which ingredients did not dissolve, and why? How could you separate all the different ingredients in your lemonade?

Separating Mixtures and Solutions

Today, we mixed water and salt together. The salt dissolved in the water, and we couldn't see the little pieces anymore. We separated the salt from the water by putting it on a hot plate.

The water evaporated and the salt stayed in the cup.

The salt and the water made a special mixture, called a solution. The water chemically changed when we added salt to it, and it was harder to separate than trail mix.

Mixtures and Solutions

Today we made different mixtures. If you mix to solids together, you make a mixture. If you mix a solid and a liquid, or if you mix different liquids together, you create a solution. A solution is a special type of mixture. It's harder to separate a solution, because the solids have dissolved in the liquid.

Play this game below to separate mixtures and solutions!

Mixtures and Solutions Game

Reflection questions:

1. What are different ways you can separate a mixture?

2. How could you create a mixture and separate it?