Question of the Day Rules You must work alone You may NOT use your textbook today You have 5 minutes to complete the QOD Good luck!!

Questions of the Day 1)In the atomic model of potassium below, which letter represents a valence electron? Explain your answer. 2) What do elements of the same period have in common? REPRESENTING ATOMS (pp. 26–29) 3)How is Lewis notation useful?

Questions of the Day 1)In the atomic model of potassium below, which letter represents a valence electron? Explain your answer. The letter D, because this electron is in the outermost electron shell.

Answers 2) What do elements of the same period have in common? They have the same number of electron shells in their atoms.

Answers 3) How is Lewis Notation useful?. Lewis Notation illustrates only the valence electrons of an atom

What are we doing Today? Question(s) of the day Lewis Review Bohr Rutherford Review Sheet  Assignment #1 Quiz (Wednesday) Lab on Metals & Non-Metals (Thur) DEQ (Day End Question(s))

Recycling Jobs Tomorrow Morning Remember to do your recycling jobs Smile

Periodic Table Study Guide How to Draw Lewis Structures Review REVIEW INFORMATION

Lewis Structures Find out which group (column) your element is in. This will tell you the number of valence electrons your element has. You will only draw the valence electrons.

Lewis Structures 1)Write the element symbol. 2)Carbon is in the 4 th group, so it has 4 valence electrons. 3)Starting at the right, draw 4 electrons, or dots, counter- clockwise around the element symbol.

Lewis Structures 1)Check your work. 2)Using your periodic table, check that Carbon is in the 4 th group. 3)You should have 4 total electrons, or dots, drawn in for Carbon.

Lewis Structures On your worksheet, try these elements on your own: a)H b)P c)Ca d)Ar e)Cl f)Al

Lewis Structures On your worksheet, try these elements on your own: a)H b)P c)Ca d)Ar e)Cl f)Al

Lewis Structures On your worksheet, try these elements on your own: a)H b)P c)Ca d)Ar e)Cl f)Al

Lewis Structures On your worksheet, try these elements on your own: a)H b)P c)Ca d)Ar e)Cl f)Al

Lewis Structures On your worksheet, try these elements on your own: a)H b)P c)Ca d)Ar e)Cl f)Al

Lewis Structures On your worksheet, try these elements on your own: a)H b)P c)Ca d)Ar e)Cl f)Al

Lewis Structures On your worksheet, try these elements on your own: a)H b)P c)Ca d)Ar e)Cl f)Al

Atom Representation Lewis Structure Bohr Rutherford Structure Simplified Ball & Stick

The Bohr-Rutherford model of the atom states that atoms are composed of three subatomic particles: protons, neutrons, and electrons.

Protons - heavy positively charged particles found in the nucleus. The # of protons = the atomic number of the Element.

Practice makes perfect! Find the number of protons and neutrons for the following elements: Element# of protons# of electrons# of neutrons Lithium Fluorine Calcium Helium Argon Potassium

How to draw a Bohr Rutherford Diagram for Lithium Step 1: Find the number of protons, neutrons, and electrons. protons - neutrons - electrons -

Step 2 - Draw your nucleus and include in there the number of protons and neutrons for your element.

Step 3 - Place your electrons on the orbits as "dots". Remember that the first shell can only hold 2 electrons, while the second and third can both hold 8 electrons. Draw:

Practice makes perfect Draw proper Bohr diagrams for the following elements: (a) Berylium (b) Oxygen (c) Neon (d) Sodium

What to do now? Finish Lewis Structure Page Finish Bohr Rutherford Practice Page Assignment 1 Show up on Wednesday for lab prep Study for quiz on Wednesday

QUIZ (What will it be on?) The Atom Lewis Structures Bohr Rutherford Structures Periodic Table of the Elements

Day End Question (DEQ) 1)Which positively charged particle is found in the nucleus? 2)What are the elements (family) in the second column of the periodic table called? 2)What are the elements (family) in the far right column of the periodic table called?

Answers 1) Which positively charged particle is found in the nucleus?. The proton

Answers 3) What are the elements in the second column of the periodic table called?. Alkaline earth metals.

Answers 4) What are the elements in the far right column of the periodic table called?. Noble Gases