Cut the orange and dip a slice into baking soda and try it! 4. All you need are oranges and baking soda. Make Orange FizzĪnother super fun (and tasty) way to teach chemical changes is to make orange fizz. This will open a discussion on how they knew which mixtures prompted physical or chemical changes, with the students providing real examples from their own observations. Have the students determine in which glass(es) a physical change occurred and in which a chemical change occurred. Next, the teacher puts a spoonful of vinegar in one glass, a spoonful of bleach in another glass, and a spoonful of hydrogen peroxide in the last glass (and don’t forget safety glasses while you do!). Start the experiment by having students put colorings into the water to show a physical change (color change). Separately, collect food coloring of 3 different colors, a cup of bleach, vinegar, and hydrogen peroxide (do not mix). Observe Color Changesįirst, fill three glass jars halfway with water. Students can observe how this chemical change completely changes the balloon! 2. This gas is trapped inside the bottle and balloon, causing the balloon to inflate. When baking soda reacts with vinegar, a gas (carbon dioxide) is created. When ready, make the balloon stand up by pouring the baking soda into the bottle. Stretch the balloon around the top of the bottle carefully to not let the baking soda fall into the bottle. Have the students put two spoonfuls of baking soda into the balloon and then using the funnel, pour vinegar into the old soda bottle until it is about half full. For this experiment, collect an old soda bottle, vinegar, baking soda, a balloon, and a funnel. This is a very easy experiment to teach a chemical change to young kids. The following five experiments are my favorite ways to teach chemical changes to elementary students: 1. Often the best way to teach science is by bringing complex ideas to life and making it fun! I find that teaching chemical changes is a great way to teach the properties of matter because it provides students an opportunity to visually see a change, rather than just interacting with numbers and formulas. A chemical change occurs when a chemical substance is transformed into one or more other substances.
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