Chemistry Unit d Flashcards
A solid combination of atoms of two or more metals
Alloy
A layer that is physically attached to a product of two or more metals
Alloy
A layer that is physically attracted to a product to protect, add color, or enhance its performance
Coating
An alloy of zinc and copper
Brass
Plastics are made from this substance
Petroleum
The hardness of pencil lead is controlled by the amount of what mixed put in it
Clay
An allotrope of carbon composed of flat sheets of carbon atoms that can slip by one another easily
Graphite
Elements that make up most semiconductors
Metlloids
In electroplating, the power source provides these needed particles
Electrons
A material that can conduct an electric current without any electoral resistance
Super conductor
The process of adding impurities to an element to improve its properties
Doping
The deposit of thin layer of metal on the surface of an object by a process involving oxidation-reduction reactions
Electroplating
Different types of an element that each have distinctly different chemical or physical properties
All trope
In electroplating the electrode at which reduction occurs
Cathode
This engineered substance, a metal replacement for many uses, that is composed of carbon-atom chains or rings with hydrogen and other atoms attached
Plastic
What no metal is composed of both steel and stainless steel
Carbon
In the lab “sticking rich” the penny that was heated in the zinc chloride and then on the hot plate turned to
Brass
In the lab” copper plating” ____ was anode
Copper
In the lab “copper plating” what was the reaction that occurred at the cathode
Reduction
What does decant mean
To pour carefully
Why as zinc added to cucl2 solution instead of Ag metal
Zinc is more reactive
An allotrope of carbon which is the hardest substance known
Diamond
