Quiz 3
General term for a substance containing two or more elements bonded together
What is compound
Word meaning " a nourishing substance"
What is nutrient
Compounds containing fluorine, chlorine, bromine, or iodine
What is halides
What is specific gravity
General term for a beautiful mineral prized for its hardness, color, and "fire"
What is a precious stone
Main function is to contribute to the general health of a plant and improve disease resistance
What is potassium
The process by which nitrogen is moved from the air to the soil to be used by plants and returned to the atmosphere to be used again
What is nitrogen cycle
Contains carbon bonded to oxygen
What is carbonates
Substances found naturally in the earth that have a crystalline structure
What are minerals
Ruby and sapphire are forms of
What is corundum
Any member of the group of chemicals that contain phosphorus bonded to oxygen and other elements
What is phosphate
Type of bacteria converts nitrogen into ammonia nitrates, and other nitrogen compounds
What is nitrogen-fixing (bacteria)
Largest group of minerals
What is silicates
Quality that indicates how a mineral's surface reflects light
Lab created gemstones that have the same appearance and chemical content as natural gemstones are
What are synthetic
What is phosphorus
General term for a substance composed of only one type of atom
What is element
Includes "fool's gold," which is known for its metal-like luster and golden color
What is sulfides
Scale used to measure a mineral's hardness
What is the Mohs Scale
Name for a metal mixture
What is alloy
Stimulates the growth of stems and leaves
What is nitrogen
Type of bacteria converts nitrates in the soil into atmospheric nitrogen
What is denitrifying (bacteria)
The tendency of a mineral to break along certain planes
What is cleavage
Term describing a mineral that glows when exposed to ultraviolet lights and continues to glow when the light is removed
What is phosphorescent
Emerald and aquamarine are varieties of
What is beryl