Elements
Describe an element
An element is a pure substance made on one kind of atom.
Describe a compound
A compound is two or more elements CHEMICALLY combined
Describe a mixture
elements or compounds mixed together by physical means
Salad
Mixture
Are mixtures pure substances?
No
Are elements on the periodic table?
Yes
Composed of two or more elements combined chemically
Compound
composed of two or more elements not chemically combined
what is a mixture
Sweet Tea
Mixture
What two things are considered pure substances?
elements and compounds
Can elements be separated by physical or chemical means?
They can not be separated at all
Can it be separated chemically or physically?
A compound can be separated chemically
can mixtures be separated chemically or physically
mixtures can be separated physically
Aluminium
Element
What is the difference between a pure substance and a non-pure substance?
Pure substances can't be separated physically
Give one example of an element
Carbon, Neon, Oxygen... anything that is on the periodic table
Is Neon a Compound?
Not a compound, this is an element
what are the two groups mixtures are separated into
homogeneous and heterogeneous
Salt
Compound
Give one example of a pure substance
Carbon, Neon, anything that is an element or compound
What three groups are elements separated into?
metals, non-metals, and metalloids
Describe a compound
something that has two or more elements chemically combined
describe heterogeneous
you can see the different parts of it
Carbon
Element
Describe pure substances
Pure substances are substances that are chemically combined