Self-Check 1.1


What five properties must a substance have to be considered a mineral?

Minerals (1) are naturally occurring, (2) are solid, (3) have orderly crystalline structures, (4) have unique chemical compositions, and (5) are inorganic

Identify the three main subatomic particles and describe how they differ?

Protons are found in the nucleus of an atom and have a positive electrical charge. Neutrons also are found in the nucleus but have a neutral electrical charge. Electrons are found in the orbiting shells and have a negative electrical charge.

How do atoms, ions, and isotopes differ?

AN atom is the smallest particle of an element. Atoms are electrically balanced, having the same number of positive protons and negative electrons. Therefore, an ion has either a positive or negative charge. Isotopes are atoms of the same element, only wi

If the number of electrons in an atom is 17 and its mass is 35, calculate the atom's atomic number. Also, indicate the number of protons and the number of neutrons this atom contains.

The number of electrons is equal to the number of protons in a neutral atom. Using this information, the atomic number is 17, because there are 17 protons in this atom. The number of neutrons in an atom can be found by taking the mass number and subtracti

What's radioactive decay?

Radioactive decay is the disintegration of unstable isotopes of a particular element.

What properties distinguish minerals from one another?

Properties of minerals include crystal form, luster, streak, color, hardness, cleavage, fracture, and specific gravitiy

Explain the following phrase: "Every mineral has its own crystalline structure.

The crystalline structure of any mineral is unique and different from that any other mineral. It's the external expression of a mineral's internal arrangement of atoms.

Although the color is a mineral property, why is it an unreliable method of identification?

Although most minerals are thought to be a particular color, like gold and silver, slight impurities can sometimes alter this "expected" color. Quartz, for example, can be pink, purple, milky white, and even black based on the impurities present.

How do silicate and non-silicate minerals differ?

Silicate minerals contain specific building blocks of silicon-oxygen tetrahedrons. Nonsillicates lack silicas in their mineral structures.

What's the difference between a mineral resource and a mineral reserve?

Mineral resources are Earth's useful minerals that can be recovered for use. Mineral reserves include known deposits of minerals that can be mined for a profit.