1. Physical Properties vs. Chemical Properties

2. Matter
Matter is anything that has mass and takes up space.

3. Physical Property vs. Chemical Property
Matter has both physical properties and chemical properties.
A property is simply a trait or characteristic belonging to something, in this case matter.

4. What is a Physical Property?
A physical property is a characteristic you can observe or measure without changing the composition of the substance.

5. Physical Properties Physical properties include:
Electrical conductivity
Color
Density
Hardness
Viscosity
Odor
Ductility
Boiling point
Malleability
Melting/freezing point
Brittleness
Specific heat
Solubility
Texture (smooth or rough)

6. Recognizing physical properties…
The color of sulfur
The texture of iron
The boiling point of water
The malleability of foil
Syrup’s viscosity

7. Intensive Properties vs. Extensive Properties

8. What is an Intensive Property?
An intensive property is a physical property of matter that DOES NOT depend on size or amount Examples: Color, odor, hardness, melting point, boiling point, specific heat, density, molecular weight

9. What is an Extensive Property?
An extensive property DOES depend on size or amount Examples: mass, volume, length

10. The density of water The mass of a log Silver is smooth
Learning Check #1 Label the following as either an intensive property (in) or extensive property (ex):
The density of water
The mass of a log
Silver is smooth
Gold melts at 1,064 ◦C
The ruler is 1 meter long
120 mL of sulfuric acid in ex

11. What is a Chemical Property?
A chemical property is any property of a substance or material that becomes evident ONLY during a chemical reaction.
Chemical properties CAN NOT be observed or measured just by looking. Must undergo a chemical change!!

12. Chemical Properties Chemical properties include: Reactivity with water
Combustion
Toxicity (toxic)
Chemical stability
Flammability
Oxidation state (charge)
Bonding pH

13. Recognizing chemical properties…
Sodium has an oxidation state
Paper is flammable
The pH of bleach
The toxic nature of formaldehyde

14. Gunpowder will combust Silver is smooth Gold melts at 1,064 ◦C
Learning Check #2 Label the following as either a physical property (pp) or chemical property (cp):
Carbon is black
Gunpowder will combust
Silver is smooth
Gold melts at 1,064 ◦C
Copper can be bent into wires
Oxygen forms covalent bonds with hydrogen pp