The most basic and by the way fun activity is to mix baking soda and vinegar.
1 teaspoon of baking soda with 20 mL of vinegar in a clear container. Kids and adults like to watch this.
You can make the experiment more challenging in several ways.
1. Have substances measured.
Ask students to measure 20 grams of baking soda and 20 mL of Vinegar.
2. Vary the amounts of the substances (reagents).
5 grams of baking soda and 20 mL of vlnegar
20 grams of baking soda and 20 mL of vinegar
50 grams of baking soda and 20 mL of vinegar
Students can measure the height of the reactions in a clear container and whether all of the substances become part of the reaction.
3. Change the order you add substances. I recommend baking soda in container first and then vinegar. However, changing the order may change how fast and high the reaction is.
4. Measure the temperature of the vinegar and baking soda before and after they are mixed. Measure the temperature of the solution formed by the chemcial change.
Do what is appropriate for the age group.
Measuring should be introduced with Grade 3. The comparison of different amounts to affect the reaction should be grade 5 and above.
You can spend a lot time getting children to do activities that are grades ahead or you can lay the foundation so they can learn more readily later.
A variation of this is to have students put vinegar in a used plastic soda bottle. Then baking soda in a balloon. They carefully fit the balloon over the bottle opening. hey spill the Then they lift the balloon to spill the soda into the vinegar. The balloon inflates with the CO2 created.
For high school students, Students can create CO2 gas to put out the flame of a candle. Students mix vinegar and baking soda in a soft drink bottle and pour the CO2 gas over a lit candle. The flame is snuffed because no oxygen can get to the burning wax to continue the oxidation process of burning. Carbon dioxide is denser than the atmospheric gases of nitrogen and oxygen. It sinks and produces a barrier at the same time.