Physical and Chemical Changes Standard WarmUp What is

Physical and Chemical Changes Standard

Warm-Up What is the difference between a homogeneous mixture and a heterogeneous mixture? Name Take 1 example of each out your HW and Signed Book Form Take out your signed Syllabus and Safety Contract (if I still need)

Objectives Understand …we’ll how to classify matter fully come back to this

Agenda Warm-Up Review of HW Grouping Talk about Grouping Notes HW Activity

Review of Homework Questions? ? ?

Grouping Activity With your group, read the statement on the sheet of paper Categorize them into multiple groups (you decide how many) and label them

Example Pizza Colored pencils Strawberries Cucumbers Tape Bananas Hamburger

Questions? ? Have at it!!!!

Grouping- More Detail Talk to a near-by group Explain Work how you categorized it together to make a new grouping chart Tape the paper onto the whiteboard provided

Objective- Again To understand the difference between chemical and physical changes

Physical Properties Definition Properties that can be observed or measured without changing the substance Examples Melting Malleability Solubility Conductivity Mass Length Color Boiling point Luster Volume Ductility

Chemical Properties Definition Examples Properties Rot Decompose React Burn Rust Explode p. H observed when a substance is chemically changing Ability of a substance to chemically change

Physical Changes Definition Examples Changes Breaking Bending Cutting Melting Boiling in size, shape, state, or appearance Matter stays the same

Chemical Changes Definition Examples Matter Rusting Cooking Burning Reacting changes to a different kind of matter Make something new

Intensive Properties Definition Examples Properties Hardness Melting point Malleability Color Conductivity Density State of matter Ductility Solubility Luster that do not depend on the amount of matter

Extensive Properties Definition Examples Properties Mass Volume Length that do depend on the amount of matter

Homework Create a sign (chemical change or physical change) Can use computer or draw on an 8 ½ x 11 sheet of paper Must include What type of change it is (chemical or physical) What is happening/what is the example (example: iron rusting) Picture (or multiple pictures) Explanation of why you categorized it as a chemical or physical change Name and period ON THE BACK NOTE: These are to be nice since I want to hang them up in the room!!! DUE: Friday, September 4 th If you don’t have a printer- email it to me at afair@bcps. org

Exit Slip Explain the difference between a chemical and a physical change in your own words.

Videos… The chemistry of fireworks Why do leaves change color https: //www. youtube. com/watch? v=n. PHeg. Sul. I_M https: //www. youtube. com/watch? v=X 0 n. Wm. Te. QPfo http: //www. quia. com/quiz/303980. html