Happy October. At the end of today the school year is 1/12 over! Do Now: Answer the following question: David says, “ ‘Pure honey’ means it has nothing else added.” Susan says, “The honey is not really pure. It is a mixture of many substances.” Who is right? Explain your answer.

Bell Schedule Today Period Times Length Adv. 7:42-8:07 25 minutes 1 8:10-9:04 54 minutes 2 9:07-10:01 3 10:04-10:58 4 11:01-11:55 5 11:58-12:52 6 12:55-1:49 7 1:52-2:46

Homework Review air inside a balloon Mixture Homogeneous aluminum (Al) Pure Substance Element magnesium (Mg) acetylene (C2H2) Compound tap water in a glass soil Heterogeneous pure water (H2O) Compound, chromium (Cr) Element, Chex mix salt + pure water (NaCl + H2O) benzene (C6H6)

Pick an object in the room… Make a list of all the possible ways you can think of to describe that object. Most of the things you put down were “physical properties” Physical Property of Matter: Characteristic that can be observed or measured without changing the composition of the sample

What’s Missing? Matter can also be described by a lack of physical properties. Ex. – Air lacks any color.

Section Review/Exit Slip