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Flashcards in Elements Notes Deck (8)
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1

Element

A pure substance that is made up of only one type of atom

2

Periodic table of elements

All known elements in the universe organized according to their properties

3

General categories of elements

3

Metals, non-metals, Metalloids

4

Metal's properties

Shiny, metallic appearance
Solid at room temp, besides mercury
High melting points
High densities
Malleable
Ductile
Thermal(heat) conductors
Electrical conductors
Large atomic radii

5

Non-metal's properties

Poor heat/electrical conductors
Brittle if solid
Non-ductile
No metallic luster
Transparent as a thin sheet
Can be solid liquid or gas at room temp

6

Metalloid's properties

B, Si, Ge, As, Sb, Te, Po, At
Solid
Can be shiny or dull
May conduct electricity
Poor conductors of heat
Brittle
Non-ductile

7

Chemical symbol

A universally recognized notation method of representing an element

8

Rules for elements symbols

1. A symbol will have either 1 or 2 letters
2. The first letter is always capitalized
3. If there is a 2nd letter, it's always lower case