Sept. 19 - Density Lab and Classification of Matter

Congratulations on completing your first lab!  Make sure you try to plot the data tonight so that you can ask me questions tomorrow.  You can hand the lab in on Tuesday at the latest.

Next we took up the solutions to the changes of state handout:

• Changes of State worksheet solutions

Here are some fun videos involving change of state:

• Freezing a flower: http://www.youtube.com/watch?v=Gz3lrLoW0og
• Sublimation of Dry Ice: http://www.youtube.com/watch?v=_jvicQ2Xj0o
• Liquid Nitrogen in a Swimming Pool: http://www.youtube.com/watch?v=w2mj-Sq2oeo

Here are two new handouts for today:

• Classification of Matter
• Pure Substances and Mixtures

Learning Goals: Understand how substances can be classified as pure or mixtures.

Success Criteria: You can describe the difference between elements, compounds, and different types of mixtures.

We discussed the definition of all these different classifications.  Then we played a game where we looked at different substances and tried to classify them.  Are these pure or mixtures?

Blood.

Graphite.

Diamond.

The last two are actually both pure and the exact same element!