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Elements compounds and mixtures - Coggle Diagram
Elements compounds and mixtures
elements
substances made of only one atom
there are a ways to identify a element
melting point
boiling point
density
a pure substance that cannot be broken down into simpler substance by chemical process
molecules of elements
a pure substance made of two or more atoms
monatomic
one atom
diatomic
two atoms
triatomic
three atoms
polyatomic
four atoms
properties of elements
metals
shiny
good conductor of heat
good conductor of electricity
malleable
ductile
high density
high melting point
high boiling point
sonorous
non-metals
dull
poor conductor of electricity
poor conductor of heat
not malleable
brittle
low density
low boiling point
low melting point
metalloids
have both properties of metals and non- metals
some are dull
some are shiny
application of elements in daily life
aluminum
properties
light
high ductility
low density
do not corrode
common application
making aircraft bodies
making cans and foils
copper
properties
high electrical conductivity
malleable
ductile
common application
making electrical wires
making alloys
iron
properties
ductile
malleable
high melting point
high boiling point
common application
making stainless steel
hydrogen
properties
very flammable
colorless
odorless
lightest element
common application
fuel for making rockets
making margarines
oxygen
properties
colorless
odorless
reactive with most elements
common application
involved in steel production
used in oxyacetylene welding
in oxygen tanks for diving or patients
nitrogen
properties
non-reactive gas
colorless
odorless
common application
making fertillizers
sulfur
properties
pale yellow
brittle
common application
making insecticides
making detergent
compounds
requires a chemical reaction to form
two or more atoms chemically combine together
mixture
the periodic table
what is it
a chart to organize elements
it helps to obtain basic inform quickly
how to use it
each element has a chemical symbol which is 1 or 2 letters
the first letter must be a capital letter
there are 7 horizontal rows called periods
each vertical column is called a group or family
important features
it shows the positions of metals, non-metals and metalloids
elements are arranged in increasing proton number
from left to right across a period the properties change from metallic to non-metallic
the elements in the same group have similar chemical properties