Element Made out of one kind of atom Found on the periodic table P hosphorus U ranium Re S ulfur U ranium B oron S ulfur Ta ntalum N itrogen Ce rium

Compound Pure substance Made up of 2 or more elements CONNECTED together Chemical Change Cannot be separated

Compound Sugar C 6 H 6 O 6

Compound Salt NaCl

Mixture Made up of more than one substance Substances are MIXED and CAN BE SEPARATED Physical Change

Homogeneous Mixture Mixture looks like one substance

Homogenous Mixture

Heterogeneous Mixture Looks like more than one substance

Heterogenous Mixture

Elements, Molecules and Compounds Some elements, such as the noble gases, exist as individual atoms. Often, elements consist of two or more atoms joined together. We call these molecules. If more than one type of atom is in a molecule, we call it a compound. Click to move on

Pictorial Representations Element Compound Mixture

Organization of Matter Matter Pure Substance ElementCompound Mixture HomogeneousHeterogeneous

Element, Compound, Heterogeneous Mixture or Homogeneous Mixture??

Pure Water H 2 O

Compound H 2 O

Salt NaCl - Element, Compound or Mixture?

Compound NaCl

Air

Homogeneous Mixture (N 2, O 2, CO 2, etc)

Silver - Element, Compound or Mixture?

Element

Copper - Element, Compound or Mixture?

Element

Gravel - Element, Compound or Mixture?

Heterogenous Mixture

Sulfur - Element, Compound or Mixture?

Element

Cola drink - Element, Compound or Mixture?

Heterogenous Mixture

Sand

Heterogenous Mixture

Oxygen

Element (O 2 )

Tap Water

Homogeneous Mixture

Gold

Element

Brass

Homogeneous Mixture

Copper Sulfate CuSO 4 - Element, Compound or Mixture?

Compound

Sugar C 6 H 12 O 6

Compound

Salt water

Mixture

Carbon Dioxide CO 2

Compound

Muddy water

Mixture

Aluminum metal

Element

Sodium metal

element

Iron

element

Iron Sulfide FeS

Compound

Blood

Heterogeneous Mixture

a) element b) element c) compound d) mixture