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level: Periodic table

Questions and Answers List

level questions: Periodic table

Question	Answer
118	How many elements are there in the periodic table?
Left side	What side of the periodic table are metals?
Right side	What side of the periodic table are non-metals?
Inbetween the metals and non-metals	What side of the periodic table are metalloids?
Metals- A metal is a material that, when freshly prepared, polished, or fractured, shows a lustrous appearance, and conducts electricity and heat relatively well. Metals are typically malleable or ductile. (An example of a metal is iron.) Non-metals- A nonmetal is a chemical element that mostly lacks the characteristics of a metal. Physically, a nonmetal tends to have a relatively low melting point, boiling point, and density. A nonmetal is typically brittle when solid and usually has poor thermal conductivity and electrical conductivity. (An example of a non-metal is Oxygen.) Metalloids- A metalloid is an element that has properties that are intermediate between those of metals and nonmetals. Metalloids can also be called semimetals. (*An example of metalloids is Silicon.)	Define metals, non-metals, and metalloids.
Solid/Hard (Most metals are solid/hard at room temperature) Ductile (Can be bent and streched into wires) Mallable (Can be hammered/squashed into new shapes) Electrical/Thermal conductors (They pass both heat and electricity through them)	What are the characteristics of metals?
The combination of two or more metals, to increase the qualitie of a metals original state.	Alloy
Brittle Little or no lustrou/shine Low melting and boiling points Poor electrical/thermal conductors	Define the characteristics of non-metals.
Graphite Diamond Amorphous carbon (Can be found in things such as burnt toast/marshmellows, charcoal, and coal.)	The allotropes of carbon.
Most metalloids contain the charteristics of non-metals but can some times contain a characteristic of metals which is conducting electricity/heat. (*Note that this is only possible under the right conditions.)	Define the characterisitics of metalloids.