09.10.12 Atomic Number * Place the title and date at the top of your paper. Place an “S” in the margin of your paper then answer the prompt in a complete.

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Presentation transcript:

Atomic Number * Place the title and date at the top of your paper. Place an “S” in the margin of your paper then answer the prompt in a complete sentence. S: Draw and label the atom. Which particle makes one atom different from another atom?

What the Periodic Table Tells You P: Copy & Label: A. Atomic Number B. Atomic Mass C. Chemical Symbol D. Element Name

What the Atomic Number Tells You The Atomic Number: Equals the number of protons in the nucleus Can also help you determine the number of electrons in an atom Is easily found on the Periodic Table P:

Drawing Atoms If you do not finish its for homework. A:

What Identifies You as You? List 5 things that can be used to identify you. For example: hair color and height. C:

Johnny has a test on Atoms this week. He is still having some trouble understanding the parts of an atom. Explain the role, location, and charge of each subatomic particle in an atom to Johnny so he can pass his test! E:

Atomic Mass * Place the title and date at the top of your paper. Place an “S” in the margin of your paper then answer the prompt in a complete sentence. S: Copy the image and label each line. What does the Atomic Number tell you about an atom? Chemical Symbol Element Name

Atomic Mass? Say What? The Atomic Mass: Equals the number of protons + number of neutrons in the nucleus Unit = AMU (atomic mass unit) The exact Atomic Mass is found on the Periodic Table P: Atomic Mass = # of Protons + # of Neutrons

P: Proton Neutron electron

CH 2 Section Review: Finish: -Read Section 2 pg Then complete the Section Review on page A:

Identifying Elements Choose your favorite element from the Periodic Table. Write down its element name, chemical symbol, atomic number, atomic mass, # of protons, and # of electrons. C:

Determine which element each image is depicting. E: 1.2.

S: What is a valence electron? How do they relate to an atom’s reactivity? Valence Electrons

P: Intro To Valence Electrons / Electron cloud. Carbon Atom The electron cloud is the group of electrons revolving around the nucleus of an atom; a cloudlike group of electrons The valence electrons are found in the outermost energy level of an atom. 1 st energy level 2 nd energy level (outermost) Carbon atom has 4 valence electrons. Valence electrons of an atom are responsible for chemical reactions.

P: Compare reactive elements and stable elements. Carbon Atom 3. The number of valence electrons determines the number of reactions an atom can make. 4. Oxygen has 6 valence electrons. Carbon has 4 valence electrons. Which atom can react or make more Bonds? Oxygen AtomNeon Atom 1. Atoms are more likely to be reactive if they have between 1 and 7 valence electrons. 2. An atom that has 8 valence electrons is considered stable and non-reactive because the outermost energy level is completely filled and cannot bond with other atoms. Ans. Oxygen because it can bond/react 6 times compared to carbon that can only Make 4 bonds/react at a time.

A: Identify these atoms: Image # of Protons # of Neutrons # of Electrons Atomic Number Atomic Mass Element Name Chemical Symbol

C: What Questions do you still have before the test on Friday?

OXYGEN ATOM NEON ATOM E: Compare Elements Determine which element is more stable. Explain why?

Atom Jeopardy Review S: What can the number of protons tell you about an atom?

P, A, & C: Jeopardy Review

E: Questions and Answers What areas do we need to go over to be successful on tomorrows test?