Classification of matter overview
- 1. Today in Science You will Need: Pencil, Colored Pencils, Highlighters or Markers Power Notes – Classification of Matter –Overview – 1 page 2 sides- Bookshelf
- 2. Assignment Log #2 9/13 9/20 Binder Check #1 9/13 9/14 Metric Review- end of period 9/15 9/16 Matter Power Notes 50 9/16 9/19 Physical Properties Lab 55
- 3. Binder Check #1 & Test #1 Binder check is graded for ORGANIZATION – if you have the papers in the correct order and all are included, this is an easy assignment to get an “A” on. The Binder is due at the beginning of the period . While you take your test, I will grade your binders. Test #1 – Create a ½ page of notes , front side only and done by hand . Target Concepts listed on Learning Point
- 4. Do You Remember: What tool measures volume? If water is at 57 degrees Celcius what state will it be in? How do you know? What is the metric unit for mass? dkL represents what unit? What is the abbreviation for kilogram? The bubble at the top of fluid in a measurement container is called? What is the formula for GLUCOSE? What waste product do we produce that plants need for photosynthesis?
- 5. Which variable remains constant in an experiment so as to keep the results fair? On which axis is the dependent variable usually found on a graph? What two things are required in the title of your graphs for physical science? How do you form the title for a graph with an independent and dependent variable? If the independent and dependent variable both change in the same direction, what type of relationship is this? Which variable does the scientist chose to effect a change?
- 6. Topic : Classification of Matter – Overview Where have you seen things organized into groups? ALL MATTER can be divided into ________ main categories. 6
- 7. Matter is Pure Substance Mixture -anything with mass and volume (takes up space) Matter w/a constant composition All particles have the same properties Matter w/ variable composition Made from a blending of two or more substances
- 8. Element -made up of atoms w/same atomic # -each element has its own unique amount of protons Examples : Gold Silver Oxygen
- 9. Compound -2 or more elements chemically combined -can be broken down only by chemical means Examples : Water – H 2 O Hydrogen Peroxide – H 2 O 2 Ammonia – NH 3
- 10. Homogeneous Mixture -all particles are distributed evenly -often looks like one substance Examples : Coffee Kool-Aid Cake Mix Brass
- 11. Heterogeneous Mixture -particles are not distributed evenly -usually can see the different “ingredients” Examples : Pizza Lucky Charms Cereal Inside of Backpack
- 12. Subscripts (letters) -Indicates the physical form in which the substance is found Examples : (s) = solid H 2 O (s) = ice water (l) = liquid H 2 O (s) = liquid water (g) = gas = H 2 O (s) = water vapor (aq) = aqueous (in solution) Nickel in liquid solution
- 13. Subscripts (numbers) -Indicates the amount of atoms needed to build the compound. Examples : NaCl = Sodium Chloride – 1 sodium atom , 1 Chlorine atom (table salt) N 2 O = Nitrous Oxide – 2 nitrogen atoms , 1 Oxygen atom (laughing gas) HC 2 H 3 O 2 = Acetic Acid – 4 hydrogen, 2 carbon, 2 Oxygen (main component of vinegar)
- 14. Homework Review Questions #1-10 – Due Tomorrow by the end of class Binder Check #1 –Cover, Table of Contents, Tabs & Organize Papers – due next Tuesday ½ page of notes : - Test #1 on Tuesday of next week