An atom that has an equal number of protons and electrons has no net electrical charge. An imbalance in the numbers of protons and electrons forms an atomic ion. So, atoms may be neutral, positive, or negative.
Notice that the word 'telephone' ends in a vowel, but the ending sound pattern is a C for the 'n' sound at the end of the word. Also, there is only one C to represent the single 'ph' phoneme. Similarly, the word 'high' has four letters, but only two sound pattern rules and...
When a substance is dissolved in water or some other solvent, the freezing point is lowered. Every solvent has a different susceptibility to colligative effects. Adding about 68.5 grams of salt to 1 liter of water lowers its freezing point by 1.86 degrees Celsius (3.4 degrees Fahrenheit). When...
What Is the pH of Salt Solutions? Whether a solution is an acid or a base depends on its concentration of the H+ ions. In the field of chemistry, an acid is a substance that dissociates in water to yield H3 O+, has H in its formula, and has a higher H+ concentration in a ...
The meaning of AMPHIPHILIC is of, relating to, or being a compound (such as a surfactant) consisting of molecules having a polar water-soluble group attached to a water-insoluble hydrocarbon chain; also : being a molecule of such a compound.
In plants, the epidermis is a single layer of cells as opposed to the several layers of cells in the human and animal epidermis. The plant epidermis also has an additional layer on top of it — the cuticle, which is an impervious substance secreted by epidermal cells to protect against des...
Secondary succession is the re-colonization process of a full-fledged ecological community from the remnants of the soil after an ecological disturbance occurs.
(which sometimes evolves fumes). In its liquid state, formic acid has a pungent odour that is powerful and pervasive. The density of this substance is 1.22 grams per milliliter. The melting point of formic acid is 8.4 degrees Celsius, and the boiling point is 100.8 degrees Celsius. This ...
Phishers trust that by perusing the email in a rush, they won't completely examine the substance and won't find irregularities. Message Style A quick sign of phishing is that a message is composed with unseemly language or tone. In the event that, for instance, a partner from work ...
The reaction arrow points to the right; thus, indicating that this chemical reaction proceeds in the forward direction. The numbers that precede each chemical formula represent the number of moles of each substance that are needed to complete the chemical reaction. The single arrow in this ...