Matter Classification Matter Anything that takes up space

Matter Classification Matter: Anything that takes up space!!!

Pure Substances A sample of matter that has definite chemical and physical properties.

Elements

Compounds Made of elements in a specific ratio that is always the same Has a chemical formula Can only be separated by chemical means, not physically

Pure Substances Element composed of identical atoms EX: copper wire, aluminum foil

Pure Substances Compound composed of 2 or more elements in a fixed ratio properties differ from those of individual elements EX: table salt (Na. Cl)

Pure Substances For example: compounds Two different compounds, each has a definite composition.

Mixtures Variable combination of 2 or more pure substances. Homogeneous (solution) Heterogeneous (Mechanical Mixture)

Mixtures: Homogenous Solution homogeneous very small particles no Tyndall effect Tyndall Effect – particles don’t settle – EX: rubbing alcohol

Mixtures Mechanical Not Mixture of a uniform composition throughout Heterogenous

Mixtures: Heterogenous Suspension Heterogeneous When mixed, a suspension can look uniform particles settle = more than one distinct layer EX: fresh-squeezed lemonade

Mixtures vs. Compounds http: //www. bbc. co. uk/schools/ks 3 bitesize/science/chemistry/elements_com_mix_6. shtml

Can you identify the following? You will be shown a series of photos. Tell if each photo represents an item composed of an element, compound, or mixture. Review: An element contains just one type of atom. A compound contains two or more different atoms joined together. A mixture contains two or more different substances that are only physically joined together, not chemically. A mixture can contain both elements and compounds.

Rocks or Mixture? Element, Compound,

Rocks or Mixture? Element, Compound,

Copper or Mixture? Element, Compound,

Copper or Mixture? Element, Compound,

Jelly Beans Element, Compound, or Mixture?

Jelly Beans Element, Compound, or Mixture?

Table Sugar Element, Compound, or Mixture?

Table Sugar Element, Compound, or Mixture?

Diamondor Mixture? Element, Compound,

Diamondor Mixture? Element, Compound,

Tea or Mixture? Element, Compound,

Tea or Mixture? Element, Compound,

Salt or Mixture? Element, Compound,

Salt or Mixture? Element, Compound,

Neon Gas Element, Compound, or Mixture?

Neon Gas Element, Compound, or Mixture?

Salad or Mixture? Element, Compound,

Salad or Mixture? Element, Compound,

Pure Water Element, Compound, or Mixture?

Pure Water Element, Compound, or Mixture?

Aluminum Element, Compound, or Mixture?

Aluminum Element, Compound, or Mixture?

Lemonade Element, Compound, or Mixture?

Element, Compound, or Mixture? Lemonade

Silver or Mixture? Element, Compound,

Silver or Mixture? Element, Compound,

Sand or Mixture? Element, Compound,

Sand or Mixture? Element, Compound,