Classifying Matter

An element is ____

• a pure substance

• Made up of different types of atoms

• cannot be broken down by physical or chemical change

• 181 elements are known so far

Compounds are____

• substances composed of two or more different elements that can be broken physically

• substances composed of two or more different elements that can be broken only chemically

There are 2 types of mixtures(Heterogeneous and homogeneous ). What do they mean?

• Heterogeneous:-

  same

• Heterogeneous:-

  different

• homogeneous:-

  same

• homogeneous:-

  different

Where on the periodic table are the non-metals found?

• on the left

• on the right

• on the top

• on the bottom

An element is made of (a)   type of atom.

A compound is made of (a)   different Types of atoms that are chemically bound

A mixture is made up of ______ different types of atoms, not _______ joined together.(separate with a comma)

(a)  

What does "calcium+ carbon+ oxygen" make

(a)  

The element symbol for sodium is:

• K

• So

• Na

• Tc

Sodium chloride is salt

• True

• False