Science experiments to do in class with kids: here are 5, easy, safe and explained, for science lessons in middle and high school.
Science is one of the most interesting subjects in the entire curriculum, but it tends to get boring if you don’t see direct applications. There are plenty of simple and safe science experiments that can be done in the classroom to liven up a lesson. Just a few components are enough to engage students in the world of applied science . Let’s look at 5 science experiments to do in the classroom.
Chemical reaction experiment
Surely the most spectacular of the experiments is that of seeing a fast chemical reaction with strong gas production. The experiment is very easy and can be integrated into other scenarios.
You need a small plastic container, a spoonful of baking soda and a spoonful of wine vinegar. You put the baking soda in the tray and pour the vinegar over it. The reaction is harmless and makes a lot of bubbles while the acetic acid attacks the salt.
Invisible Ink Experiment
A fun experiment, but one that is important to do safely, is that of invisible ink .
For this experiment you will need a lemon, a toothpick, a sheet of plain paper and an incandescent light bulb or a similar heat source. By writing a message on the paper with lemon juice, once it dries it becomes invisible and only becomes readable again if it is properly heated.
Emulsion experiment
For this experiment you need a jar with a lid, water and oil. Mix water and oil in equal proportions and shake the jar vigorously. In this way you make the oil reduce to droplets. At this point you let the experiment rest, showing that the oil quickly separates again and explaining the impossibility of mixing some liquids together .
Saturation experiment
You need a glass with water and a bag of kitchen salt. Pour a teaspoon of salt into the water and stir until it dissolves. Repeat the pouring several times, always stirring until the salt begins to precipitate, thus showing the saturation of the liquid .
Bottle Experiment
For this experiment you will need an empty glass bottle, a bowl with water, a candle and two toothpicks. Fix the candle with wax to the bottom of the bowl, attach the toothpicks with wax to the base of the candle to make it thick and pour in a little water. At this point you light the candle and insert the bottle. By balancing the bottle, the flame will consume the oxygen and make the water rise along its neck, explaining how the composition of the gas inside has changed .
