Answer:
The great varieties of minerals on the Earth are classified by mineralogists into a small number of groups on the basis of : The negative ion or ionic group in their chemical composition.
Explanation:
Minerals are classified based on their chemical properties. The anion, a negatively charged ion that generally comes at the end of a mineral's chemical formula, is the fundamental foundation for classifying minerals, with the exception of the native element class. Cations are ions with a net positive charge because they have fewer electrons than protons. Anions, on the other hand, have a net negative charge because they contain more electrons than protons.
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Answer:
Feldspar-clay
Quartz- No chemical change
Olivine- Limonite
Explanation:
When chemically weathered, some of the original minerals of granite change into different minerals.
Feldspar, for example, tends to hydrate and transform into a clay mineral.
Iron-rich minerals, like olivine, turn into limonite by chemical weathering. Quartz is considerably resistant to chemical weathering, so it´s the least susceptible to the chemical change.
When two air masses with different temperatures or humidity levels meet, they do not immediately mix or blend. Instead a line or boundary forms between them. This boundary is called a......<u>front</u>
Explanation:
Due to the different properties, especially temperatures. The less-dense air mass tends to rise while the denser tends to dive at the front causing turbulence. There are four main types of fronts;
- Cold front – bring rainfall and thunderstorms
- warm front – associated with less intense weather
- Occluded front – when a warm air mass is in between two cool air masses
- Stationary front - can be warm or cold but barely moves
