Elements Flashcards
What is an element?
A material with only one type of atom
What two groups do elements generally fall into?
Metals and non-metals
What is a chemical symbol?
An abbreviation for an element
What rules must chemical symbols follow?
First letter must be a capital and all other letters must be small letters
How are elements listed?
The Periodic Table
What are elements 57-71 known as?
The lanthanides
What are elements 89-103 known as?
The actinides
What state are metals at room temperature? (Usually)
Solid
What does a metal look like?
Shiny
Are metals insulators or conductors? (Both thermal and electrical)
Conductors
Do metals break easily?
No they are malleable and ductile
What effect does gentle heating have on a metal?
No effect/little effect
What sound does a metal make when it is struck?
Sonorous
What is the density of a metal like?
High density
What is unusual about carbon (graphite)?
Non-metal but conducts well
What is unusual about copper?
Metal but not silver/grey
What is unusual about silicon?
Non metal but shiny
What is unusual about lead?
Metal but melts during gentle heating
What is unusual about bromine?
Non-metal but liquid at room temperature
What is unusual about mercury?
Metal but liquid at room temperature
What are soluble metal oxides?
Alkalis
What are soluble nonmetal oxides?
Acids
What is an allotrope?
When an element forms different materials from a different element structure
Which two materials are formed from carbon?
Diamond and graphite
