CHARACTERISTIC INTRINSIC PROPERTIESAtomic Chemistry

Physical Properties• Can be observed or measured without changing the

make-up of the matter of the object• Are used to describe the object• Two categories:

• non-characterisic• characteristic

Physical Properties• Examples Include:

• Appearance• Texture• Color• Odor• Melting Point• Boiling Point• Density• Solubility

Non-Characteristic Properties (NCP)• A physical or chemical property that is NOT unique to one

particular substance.• Can be used to describe MANY substances

NCP Examples• Temperature• Mass• Shape• Color• Volume• Acidity and Alkalinity (pH)

Temperature• Measured in degrees Celsius (ºC) or Kelvin (K)• A thermometer measure the average kinetic energy of the

particles in the substance.

Mass

Shape and Color

Volume

Acidity and Alkalinity

Characteristic Intrinsic Properties• A physical or chemical property that IS unique to a

particular substance.• CAN be used to identify a substance

CP Examples• Density: the ratio of mass to volume (how much matter is

in a given space)• Magnetism: The force of attraction between a magnet

and a magnetic object• Solubility: How well a substance can dissolve in another

substance.• Melting Point: Temperature at which substance changes

from solid to liquid• Boiling Point: Temperature at which substance changes

from liquid to gas

Solubility• A measure of how well a substance can dissolve in

another substance• The solute: the substance that is DISSOLVED• The solvent: the substance that does the DISSOLVING• The solution: the result of mixing a solute and a solvent

Solubility

Melting & Boiling Points

• Freezing point of H2O: 0ºC• Liquid water will freeze to solid ice at

0ºC

• Melting point of ice: 0ºC• Solid ice will melt to liquid water at 0ºC

• Boiling Point of H2O: 100ºC• Liquid water will change into gas at

100ºC

Example• The English Oak

• Characteristic Property• Density = 720 kg/m3

• NCP• Light yellow to brown in color• 25-30 meters tall

Example #1• Which of the following properties is an example of a

characteristic property?1. Mass of 346g

2. Red in color and circular in shape

3. Temperature of 25ºC

4. Boiling Point of 204ºC

Example 2• Identify ALL of the NCP below:

1. Volume of 200mL

2. Square shaped

3. Temperature of 45ºC

4. Freezing point of 204ºC

5. Density of 24 g/mL

Example 3• Julie has an unknown substance in a beaker. Its properties are described in the chart to the right.

• Using the chart below, identify the mystery substance.

Mass 103.5g

Color Yellow

Magnetic No

Volume 50mL

Density Color Magnetic

Iron 7.86 g/mL Yellow/gray Yes

Water 1 g/mL Colorless No

Nitrogen 0.00125 g/mL

Yellow No

Sulphur 2.07 g/mL Yellow No

What is the Atomic Theory?• Click here for video!