Exam 9: Atoms,Elements and Minerals

Non-silicate minerals include the halides like _____.

Diamond has no cleavage.

A mineral specimen with a Mohs' hardness of 5 can scratch a mineral specimen with a hardness of 3.

Minerals that have the same chemical composition but have different crystalline structures exhibit polymorphism

It is clear that exposure to white asbestos causes cancer among non-smoking asbestos workers.

The crystal form of a mineral is a set of faces that have a definite geometric relationship to one another.

The number of neutrons in an atom controls the chemical behavior of an element.

The ______ group of minerals is characterized by two parallel chains of silica tetrahedra in their structure.

All of the most common rock-forming minerals in Earth's crust are silicate minerals.

_______ are the smallest electrically neutral assemblies of matter and energy that we know of in the universe.

Carbon-14 has eight __.

Plagioclase feldspar commonly exhibits __,straight,parallel lines on the flat surfaces of one of the two cleavage directions.

A pulverized mineral (usually on a piece of white unglazed porcelain)gives a color called its ____,that is usually more reliable than the color of the specimen itself.

The mineral ___ is strongly magnetic.

____,a Danish naturalist,was the first to note that the angle between two adjacent faces of a crystal of quartz is always exactly the same.

_____ is the ability of a mineral to break,when struck or split,along preferred planar directions.

The atomic mass number is equal to the number of neutrons in an atom.

The mineral ___ is an example of a native element.

The isotope composition of _____ in foraminifera shells from sediment cores are used to determine climate change in Earth history.

The innermost energy level in the standard model of an atom is full when it possesses eight electrons.