You can also use the colored template. 2. Stick your water cycle to the paper plate with glue and make a hole in the middle, where the mark is. 3. Fix the “water indicator” in the middle using a split ...

This indicates a pH value of 7 and tells us that water is neither alkaline or acid, but neutral. Acidic solutions have pH values less than 7. Stomach acid turns universal indicator paper a strong ...