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•III. Matter and Energy •A. Properties, characteristics and Structure of matter •State Standards 1.2; 1.6; 1.8; 2.3; 3.2; 3.3 •7th grade assessment •Students should know some physical properties depend on the amount of matter present while other properties do not. •View lesson before using with students. Sample questions and answers appear with mouse click or automatically.
How would you describe the objects around you?
• You can measure them. • You can mention their properties. • Properties are things you can observe with your senses. • Physical Property - a property that can be observed without changing the identity of a substance.
Why does oil float on water?
• Hypothesize How can the fact that a substance floats help you identify the substance. • Why does one substance float over another? • Write a hypothesis in your science journal.
Which has greater mass, the beaker of oil or the beaker of water? Why?
Density
50 ml Oil
50 ml water
How else can you describe matter?
• • • • • color odor ability to conduct electricity reaction to a magnet melting point