You will then compare the color of the soil with the chart of various pH levels. If you don’t want to buy a test kit, there is another option. Take samples from a six-inch deep hole. Put two ...

Indicators are substances that change colour when they are added to acidic or alkaline solutions. Universal indicator is the indicator most commonly used in the laboratory. If universal indicator ...

Watch this video to see how a salt can be produced in the lab by neutralising sulfuric acid with a metal carbonate, in this case copper carbonate. Here are some ways neutralisation is used ...