More precisely it is the negative of the logarithm to base 10 of the activity of the hydrogen ion.[1] Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are basic. Pure water is neutral, at pH 7, being neither an acid nor a base.
Report Abuse. 1  Ripe Plum. 2  This Site Might Help You. 3  A plum is ripe when its soft and a really dark purpleish color.  they should be a little soft and should have a smell (plum smell) strawberry Â· 9 years 1  ago. Smell it, squish it and last but not least bite 2  it! plump(really soft) and dark all 3  over. the color tells u everything u need to  know.
The yellow egg plum, also known by the species name Prunus domestica, may be found in either purple or yellow and is quite common in Europe and North America. The Howard miracle plum, grown primarily in the United States, has a unique pineapple flavor. Most yellow plums are small in size and typically have a thin skin. When they are fully ripe, some varieties, such as the Mirabelle plum, have red spots. Some people believe that the greater the number of red spots on the plum, the riper it is. Ad.