Charge Those Particles – Day 1 p. 125

Entry Task Draw a Bohr model of Phosphorus.

Charge those Particles – Day 1 Create a new title/thread “Ionization versus Dissociation” and date! Learning Target: I can describe chemical bonding between atoms. Update your Table of Contents!

Getting Charged What is the difference between an ion and a dipole? When an entire atom or molecule is charged, it is an ion. When one section of a molecule is positive and another section of the same molecule is negative, it is a dipole.

Getting Charged Atoms are made up of charged particles (protons and electrons). How can they be neutral? To be neutral, they have an equal number of positive and negative charges. In other words, the number of protons equals the number of electrons in the atom. The sum of positive and negative charges is 0!

Getting Charged Example: Let’s look at a neutral Oxygen atom. How many positive charges does it have? How many negative charges does it have? What is the result when they are added together?

Parts of the Periodic Table Groups: Vertical columns. All groups have similar chemical properties.

Parts of the Periodic Table Periods: The 7 rows going across the table! Also called families. The lanthanides (aka the rare earth elements) and the actinides (aka the transuranium elements) are organized in rows rather than columns. *Interesting fact: All of the actinide series elements are radioactive!

Getting Charged Look at a neutrally charged Sodium atom (Na). What happens if that Sodium atom loses an electron? How many positive charges does it have? How many negative charges does it have? What is the overall charge? What is it called?

Getting Charged Example: How do you make a chloride ion (Cl 1- )?

Getting Charged Example: How do you make a calcium ion (Ca 2+ )?

S&T #3 p. 128 Sketch a microscopic view of a water solution that contains dissolved sodium chloride (NaCl). In the caption, explain the number of positive and negative ions that you have.

S&T #3 p. 128 In sodium chloride, there is one sodium ion for every chloride ion, so the solution will show an equal number of positive and negative ions.

S&T #4 p. 128 In magnesium chloride (MgCl 2 ), there is one magnesium ion for every two chloride ions, so the solution will show more negative ions than positive ions.

S&T #5 p. 128 Use chemical symbols to show the following processes: A neutral potassium atom becoming a 1+ potassium ion. A neutral calcium atom becoming a 2+ calcium ion A neutral fluorine atom becoming a 1- fluoride ion. A neutral oxygen atom becoming a 2- oxide ion.

Charge those Particles Read and take notes “Ionization versus Dissociation” p. 129 Complete P&P #4-5 p