A more electronegative atom... Compounds are pure substances that are combinations of two or more elements. The most basic unit of a compound is the molecule, which is a combination of two or more atoms of different elements. Different elements have different properties, and hence, form different kinds of compounds.
Charcoal is added to orchid mix with the intention of keeping the mix sweet and to filter impurities. The particle size of this charcoal is perfect for the majority of orchid mixes and a little goes a long way. This medium charcoal is an ingredient in many orchid mixes.The particle size of this charcoal can very from 1/2 to 1 inch. Charcoal is not finely graded and some smaller and larger pieces may be mixed in.his medium charcoal is an ingredient in many orchid mixes. The particle size of this charcoal can very from 1/2 to 1 inch. Charcoal is not finely graded and some smaller and larger pieces may be mixed in.
There are basically two types of mulches: organic and inorganic. Both types may have their place in the garden. An organic mulch is a mulch made of natural substances such as bark, wood chips, leaves, pine needles, or grass clippings. Organic mulches attract insects, slugs, cutworms and the birds that eat them.They decompose over time and need to be replaced after several years.ine Bark: A 2- to 3-inch layer of pine bark is good for weed control. Pine bark makes an attractive, usually dark-colored mulch. It can be purchased in various particle sizes, from shredded to large-sized particles, called nuggets. Large pine bark nuggets float in water and may not stay in place during a heavy rain.