Add universal indicator to the beakers of water. Add a small amount of each salt to a different beaker and stir to dissolve. Compare the colors to the reference set. Note: the NaCl will not be pH 7, ...

Neutralisation also moves the pH of an alkali down towards seven. Several different bases can neutralise acids, and water is always produced as a result of these reactions. Metal oxides and ...

Make your own acid-base indicator from red cabbage, then test various household substances. Acids and bases are classes of materials that have different properties. Acid-base indicators change color ...

How did scientists discover and unlock this amino acid code? Once the budding molecular ... defined proportions of two or three different bases. As previously mentioned, polynucleotide ...

When an acid is neutralised, its pH increases towards seven. When an alkali is neutralised, its pH decreases towards seven. Several different bases can neutralise acids. A salt and water are ...