Physical/ Chemical ppt

Chapter 3: Matter and Its Changes

Section 1: Physical Properties and Changes ,[object Object]

Any characteristic that can be observed or measured is a physical property. ,[object Object]

Any characteristic that can be observed or measured is a physical property. ,[object Object],The same open suitcase on each side. When close d they have the same volume. But ONE is more dense. Which one? Would they be the same on a triple beam balance?

Circle the picture that is more Dense. ,[object Object]

Circle the picture that is more Dense?

[object Object],[object Object],[object Object]

1. Density changes as pressure or temperature changes. Water 15 degrees Ball sinks Water 40 degrees Ball floats

Physical appearances can be observed (5 senses)

Matter is made up of moving particles. Matter in the plasma phase have the most energy, gas has less than plasma, liquid has less energy than gas, and solids have less energy than liquids.

[object Object],[object Object],[object Object],[object Object],[object Object]

Section 2: Chemical Properties and Changes ,[object Object],[object Object],[object Object]

Chemical change—change in the identity of a substance due to its chemical properties. ,[object Object],[object Object]

Law of conservation of mass—mass is never lost or gained in a chemical reaction. ,[object Object],[object Object],[object Object]

Example—Physical Change ,[object Object],[object Object],Which one has the greater mass?

Example Chemical Reaction ,[object Object],[object Object],[object Object],[object Object]

Physical changes… no loss of mass ,[object Object]

Physical/ Chemical ppt

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