Types Of Matter (T1) Flashcards
What is a molecule?
When more than one atom is joined together even if it is the same type of atom.
What is an element?
A pure substance that is made of just one type of atom.
It is represented by a one or two letter symbol.
Eg: Helium (He)
What is a compound?
Two or more elements chemically combined.
It is represented by a chemical formula.
It is combined in the same proportions each time.
Eg: water (H2O)
What is a mixture?
Two or more substance physically combined.
They do not combine in the same proportions.
What is a heterogeneous mixture?
A mixture that is not uniform
What is a homogeneous mixture?
A mixture (solution) that is uniform.
Pure substances are..
Homogeneous
What is an alloy?
A solution of two or more metals.
What is an atom?
A single type of particle that is by itself.
