Make a Chapter 4 Title Page Update your Table of Contents

Entry Task Represent the dissociation of sodium chloride using symbols. NaCl (s)  Na 1+ (aq) + Cl 1- (aq) Solid sodium chloride dissociates in water to form sodium ions and chloride ions

Where we’ve been… Atoms interact due to forces between plus and minus charges. Forces of interaction inside molecules result in different types of chemical bonds Forces of interaction between molecules result in differences in physical properties

Creating Color Create a new title/thread “Creating Color” Learning Target: What does color tell me about the nature of matter at the microscopic level? Update your TOC

Creating Color Read the Introduction p. 154

Creating Color Create a table in your notebook for the 5 salt solutions we will be testing: NameChemical Formula Dissociation equation Calcium chlorideCaCl 2 CaCl 2(s)  Ca 2+ (aq) + 2Cl 1- (aq) Copper (II) chlorideCuCl 2 CuCl 2(s)  Cu 2+ (aq) + 2Cl 1- (aq) Potassium chlorideKClKCl (s)  K 1+ (aq) + Cl 1- (aq) Sodium chlorideNaClNaCl (s)  Na 1+ (aq) + Cl 1- (aq) Strontium chlorideSrCl 2 SrCl 2(s)  Sr 2+ (aq) + 2Cl 1- (aq)

Creating Color P&P#2: Write the statements in your notebook, and complete the blanks: A. I think each salt forms an ionic solid because __________________________. Salts are ionic compounds that are soluble in water.

Creating Color P&P#2: Write the statements in your notebook, and complete the blanks: B. I can test to determine whether each solution contains ions by __________________________. Using a conductivity meter because ionic solutions conduct electricity.

Creating Color P&P#2: Write the statements in your notebook, and complete the blanks: C. I think ionic crystals dissolve in water because at the microscopic level, __________________________. Water is a polar molecule, and the charges in water molecules interact with the charged ions in the salt and pull the ions free of their crystal lattice.

Creating Color P&P#2: Write the statements in your notebook, and complete the blanks: D. Positive ions in each salt solution are generally organized on the ________ side of the periodic table and are classified as _________________. Left Metals

Creating Color P&P#2: Write the statements in your notebook, and complete the blanks: E. Negative ions in each salt solution are organized on the ________ side of the stair-step line on the periodic table and are classified as ______________. Right Non-Metals

Creating Color P&P4: Go to each station and CAREFULLY place the wooden splint in the flame. Record the color you see. NameChemical Formula Color Calcium chlorideCaCl 2 Copper (II) chlorideCuCl 2 Potassium chlorideKCl Sodium chlorideNaCl Strontium chlorideSrCl 2 Distilled WaterH2OH2O

Creating Color Complete P&P #5 & 6. Write the entire statement in your notebook! Reflect & Connect #1-4 p Read/notes/summary on “Chemistry of Fireworks”

Entry Task What is the most common color used in M&M’s candies? Brown What are the top 3 automobile producing countries? USA, Japan/Germany What is the third most common gas found in the air we breathe (around 1%)? Argon

Entry Task What is Frosty the Snowman’s nose made of? button Which two letters have the highest point value in the game of scrabble? Q and Z

Entry Task What is the name of the jet on which the vice president flies for personal or government business? Air Force 2 Who came first in comics – Superman or Batman? Superman 1938 Which US state has the largest number of colleges and universities? New York 326

Entry Task What event first occurred in 1924 in Chamonix, France? Winter olympics Which American sports team is named after the original natives of Ireland, Scotland, and Wales? Boston Celtics Which letter begins more words in the English language than any other letter? S

Creating Color P&P#5: Write the statements in your notebook, and complete the blanks: A. I think the colors are not due to dissociation because ________________________________. The salts dissociated when it was mixed with water. If the color was due to dissociation, the solutions in the beaker would be colored and they are not.

Creating Color P&P#5: Write the statements in your notebook, and complete the blanks: B. I think the colors are not due to negative ions because ________________________________. Every salt has the same negative ion – chlorine. If the color was due to the chloride ion, then every color would be the same.

Creating Color P&P#5: Write the statements in your notebook, and complete the blanks: C. I think the colors are not due to combustion because ________________________________. The flame on the burner is due to propane which burns with a light blue flame. The flame color is the same on all the burners. It only changes color when different salts are put in the flame.

Creating Color P&P#5: Write the statements in your notebook, and complete the blanks: D. I think the colors are due to positive ions because ________________________________. The positive ions are the only difference between each of the salts that were tested.

Creating Color Read “The chemistry of fireworks” – notes and/or a summary are required! Complete R&C #1-4 p. 157

Fireworks How It’s Made: Fireworks

Reflect & Connect #1 p. 156 Flame tests are similar to fireworks because both must have enough energy to make each of the metal ions give off light in different colors. Since flame tests only test a single metal ion, they only display a single color (unique to that ion). Fireworks usually give off many colors at the same time. Flame tests Fireworks

Reflect & Connect #3 p. 156 Each atom has a different number of protons, neutrons, and electrons.