Elements, Compounds And Mixtures Flashcards
Draw a diagram of an atom of an element.
Check book for answers
What is an element?
An element is a material that cannot be split into anything simpler by chemical methods. They contain only one type of atom.
Draw a diagram of a molecule of an element.
Check book for answers
What is an atom?
An atom is the simplest particle of an element that can exist on it’s own
What is a molecule?
A molecule has 2 or more atoms joined together
What is the symbol for hydrogen?
H
What is the symbol for lithium?
Li
What is the symbol for sodium?
Na
What is the symbol for potassium?
K
What is the symbol for magnesium?
Mg
What is the symbol for calcium?
Ca
What is the symbol for barium?
Ba
What is the symbol for aluminium?
Al
What is the symbol for iron?
Fe
What is the symbol for silver?
Ag
What is the symbol for carbon?
C
What is the symbol for silicon?
Si
What is the symbol for lead?
Pb
What is the symbol for nitrogen?
N
What is the symbol for phosphorus?
P
What is the symbol for oxygen?
O
What is the symbol for sulphur?
S
What is the symbol for chlorine?
Cl
What is the symbol for bromine?
Br
What is the symbol for iodine?
I
Metallic elements are.
Good conductors of electricity
Good conductors of heat
Shiny solids
Usually have high melting and boiling points
Usually malleable and ductile
All are solids at room temperature (except mercury)
Non-metallic elements are
Non-metallic solids tend to be soft and brittle (diamonds are an exception)
Poor conductors of heat
Can be a gas, solid or liquid at room temperature
Usually dull (diamonds are an exception)
Poor conductors of electricity (graphite is an exception)
Usually have low melting and boiling points
What is a compound?
A material that is made up of two or more different elements that are chemically joined together
Draw the diagram of a compound.
Check book for answer
What is a mixture?
Two or more substances mixed together which are easy to separate
Draw the diagram for mixtures.
Check book for answer
