matter Flashcards
What is matter
Anything that takes up space
and has mass.
What is the smaller unit of matter
The atom
Name the two types of matter
Mixtures
Pure substances
What is a mixture
two or more substances put
together by physical means.
Not chemically bonded together.
There is no fixed ratio.
Give examples of mixtures
eg. air , bricks , juice , Leo, sugar
Solution (sugar + water)
What is a pure substance
A substance that has the same
Chemical composition.
Atoms are bonded together in a fixed ratio
Give examples of pure substance
H2O
CO2
Gold
Name the two types of mixtures
Homogeneous
Hetrogeneous
What is Homogeneous
Give eg
A mixture that has a uniform appearence.
eg. salt disolved in water
to create a Salt solution
What is Hetrogeneous
Give eg
A mixture that
has a non-uniform
appearence
eg. sand dispersed in water , salt and sugar mixture (can differentiate between size of particles)
Name the two types of pure substances
A compound
An Element
What is a compound
Give eg
Pure substances that are made of the atoms Of elements that are
Chemically combined in a fixed ratios.
They Contain more than one
type of atom.
They can be broken down into
simpler substances by chemical Methods.
eq. Salt , sugar
What is an element
They are pure substances that cannot be broken down into simpler substances by chemical methods.
Elements consist of only one type Of atom.
Eg eg. copper ,sulphur , silicon.
Give 3 types of elements
metals
metalloids
(semi-metals)
non-metals
