Answer:
When the surface of a mineral reflects light in manner that is similar to a metal, the mineral is said to have a <u>metallic luster.</u>
Explanation:
A mineral is a pure, naturally occurring, solid chemical substance. They have a crystalline structure and a definite chemical composition.
Another physical property that can be used to define a mineral is luster. It can be of two types: metallic luster and non-metallic luster.
A mineral is said to have a metallic luster, if it has high reflectivity like a metal. Examples : pyrite, galena.
A covalent bond is a bond between two non-metal atoms in which electrons are SHARED between the two bonded atoms. An example of this would be, the C-H bonds that are present in the molecule Methane (
). any further questions?
That is a synthesis reaction.
C. An electromagnet is temporary and is magnetic when a current flows through a wire wrapped around the core.
It is because electromagnet are the solenoid that behave like a magnet during the flow of an electric current through it. They are temporary.
