In the school. Teachers can bring the paper used as a simple science teaching materials, such as paper making and testing of acid-base pH or by cutting a long strip of white paper. Soaked in hot water that squeeze out the purple blossom-lam, the owner retains the owner flag, which is available in the locality. Then dry paper is takkradat purple. When the paper to test the pH, such as lemon juice, paper will change color from purple to red. When testing with the bass, such as powder slurry full paper will be changed from purple to blue. Paper making is this-base acid test relies on the properties of paper that can absorb water well and the fibers of the paper lets say used as acid-base, which is extracted from the purple cabbage island and also handles allow the substance. Others arrested with island paper has been applied in the analysis of the substances dissolved in the fluid or substance with the status of the flow of the flow in this case may be a liquid or a gas,.
การแปล กรุณารอสักครู่..
