No Bell Ringers This Week Please check your yearly average in this class. If you are below 70 for...

TuesdayApril 19, 2011

(TAKS Rotation Day 12-Chemistry)

Bell RingerTuesday, 4-19-11

No Bell Ringers This Week

AnnouncementsPlease check your yearly

average in this class.

If you are below 70 for the year, please come and see

me ASAP!

There are only two more grades remaining!

Six-Week’s Assignment List Date Issued Date Due

TAKS Rotation Booklet - Physics 4/11 4/15

TAKS Rotation Day 12

Chemistry Labs

4D – Elements, Mixtures, and Compounds (page

10)

5B – Chemical Behavior and the Periodic Table

(page 15)

Focus Question 4DAn example of a mixture is saltwater.An example of a compound is water.

Saltwater is a mixture of two different compounds existing together in the same container but not chemically bonded together. A mixture doesn’t have a definite chemical composition or formula. Saltwater is a strong conductor of

electricity.Water is a single compound with a definite chemical composition or formula.

Pure water is not a strong conductor of electricity.Both saltwater and water exist as liquids at room temperatures.

Barium, Magnesium, Strontium

Focus Question 5B

Lab Exercise 4DQuestion 3 - Two or more substances that are mixed together but are not chemically bonded(definition card); buttons(heterogeneous) ; ink (homogenous); potting soil (heterogeneous); Ketchup(homogenous)

Question 4 - A substance composed of only one kind of atom (definition card); A substance that cannot be broken down into simpler substances (Definition card); magnet(picture); two yellow dots connected with one line(picture); red dots(picture); Sulfur(picture); blue dots(picture)

Question 5 - A substance in which two or more different elements are chemically bonded together (definition card); Salt (picture); One Blue and Two Red dots connected with single lines (picture); Sugar (picture); Baking Soda (picture); One Blue dot connected to One Red dot with a single line (picture); Melting Ice Cube (picture)

Question 6 - Mixtures can be separated- Homogeneous or Heterogeneous; Compounds cannot be separated because they are bonded chemically; Elements are composed of only one kind of atom and cannot be made into a simpler substance

Question 7 - Mixtures, Compounds, and Elements are all composed of elements off the periodic table!

Lab Exercise 5BQuestion 1 - Barium, Magnesium, Strontium

Question 2 – Sodium (Na), Potassium (K), Copper (Cu), Zinc (Zn)

Question 5 - Shiny (luster), sodium is gray, potassium is silver/gray, copper is a brownish color, zinc is a silver color

Question 6 - Observe your class set

Question 7 - Metals, all are on the left side of the periodic table

Question 8 - Copper and Zinc