How can physical properties help you identify substances? Oct 15 / 16 Act C35 Mystery Liquids LEARNING TARGET: I can use physical properties to identify unknown liquids and justify my claim using evidence CH Q How can physical properties help you identify substances? VOCAB: particle phase physical change vapor solid liquid gas

particle phase physical change Small pieces or parts A stage in a process When the arrangement or distance between particles change; the particles stay the same

solid liquid gas vapor firm and stable in shape substance that flows freely but is of constant volume air-like fluid substance which expands freely to fill any space available substance that is a mixture of two phases at room temperature ***vapor has undergone a phase change while a gas did not

DISCUSSION Phases When a pure substance changes phase, the distance and interactions between its particles change.

phase changes

Heat gained Heat lost

PROCEDURE AND DATA MATERIALS: PROCEDURE: Read on pg. C 29-32 and summarize DATA: WS 35.1 Comparing Physical Properties of Liquids

POST DISSCUSSION What would happen to the temperature of each liquid as it continues to boil? When more liquid is added to the graduated cylinder, what happens to the volume? To the mass?? If you pour some out, what happens? If you double the volume, what happens to the mass? What happens to the density through all these charges of mass and volume? Why?

ANALYSIS - Discuss and answer Q 1, 4 & 6 on pg. C 32 ANS CH Q How can physical properties help you identify substances? A: varineed HOMEWORK Update journal / vocab packet