Physical Properties • I can describe this car by: • Red and black • Smooth texture • Mass of 28 g • Wheels are circular • 89 cm3
The characteristics of a substance that can be observed without changing the identity of the substance. Color Shape Size Texture Volume Mass Density Physical Properties
Let’s Review Density • If animal has a mass of 75 grams and has a volume of 25 cm3. What is animal’s density? • 75g/25cm3 = 3 g/cm3.
Physical Change • A physical change is a change in a substance that does not change the substance into a different one.
Chemical Properties • Describe how substances can form new substances. • Ability for wood to burn • Ability for metal to rust • Ability for material to explode
Chemical Changes • The change of one substance into another substance. • Production of odor • Change in temperature • Change in color • Formation of bubbles • Formation of a solid