Welcome back to Honors Chemistry! Please sit in your assigned seat with your name-plate in front of you.

Absent yesterday?  Here are some highlights:  Make a Name-Plate to place in front of you.  Write your first name and last name on BOTH sides.

YOU’RE A CHEMISTRY STAR! Inspiration Wall Activity  Your first and last name inside your star  You may choose to include:  Thought that is important to you  A picture  Song Lyrics  Famous Quote  Family  Favorites  SCHOOL APPROPRIATE PLEASE!  What a great inspiration to see everybody displayed  What a great inspiration to see everybody displayed

CLASSROOM GUIDELINES TO SUCCESS  Let’s share some important information:  Classroom expectations  Guidelines  Grading policy

TODAY’S LESSON: WHAT IS CHEMISTRY?  Chemistry is the study of composition of substances and the changes it undergoes.  Chemistry is the study of matter.

THE POWER OF OBSERVATION  One of the most important skills of a chemist!  It allows us to detect chemical and physical changes.  The heart of chemistry.

CHEMICAL AND PHYSICAL CHANGES  Physical Change  Alters a given material without changing its composition.  Cutting, grinding, bending, boiling, freezing, crushing.  Chemical Change  A change that produces a new substance or substances.  Rusting, tarnishing, milk souring, baking cookies, a gas is released, heat is released or absorbed.

WHAT IS THE DIFFERENCE BETWEEN AN OBSERVATION AND A CONCLUSION?  Observations are what you see, hear, feel, and what you smell from your environment.  Using your senses, detect changes.  Conclusions are based upon your observations.  They try to explain why you observed the phenomena you did.

Learning to think like a scientist…  Let’s grab a chemistry book.  Page 15  Introduction Paragraph  Partner Read Pages 15&17  Worksheet review  Take 5-7 minutes to complete

New Experiment:  Observing and Questioning…  SAFETY GLASSES MUST BE WORN AT ALL TIMES TODAY IN THE LAB.