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Sponge: Set up Cornell Notes on pg. 11

Sponge: Set up Cornell Notes on pg. 11 The topic or heading will always be at the top of the Powerpoint. Include the # Ex: 2.1 Atoms, Ions, and Molecules Essential Question : Define atom, and identify its main parts and their functions Don’t forget to add it to your T.O.Contents!.

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Sponge: Set up Cornell Notes on pg. 11

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  1. Sponge: Set up Cornell Notes on pg. 11 The topic or heading will always be at the top of the Powerpoint. Include the # Ex: 2.1 Atoms, Ions, and Molecules Essential Question: Define atom, and identify its main parts and their functions Don’t forget to add it to your T.O.Contents! 2.1 Atoms, Ions, and Molecules Define atom, and identify its main parts and their functions Key Concept: All living things are based on atoms and their interactions

  2. KEY CONCEPTAll living things are based on atoms and their interactions.

  3. An atom is the smallest basic unit of matter. Please draw and label an atom on pg. 10 (don’t take up the whole page!) energy level

  4. Fun Fact • It would take you over 1,000,000,000,000 (1 Trillion) years to count the number of atoms in a single grain of sand

  5. Although there is a huge variety of matter on Earth, all atoms share the same basic structure… • Protons- in the nucleus. Positively charged (+) • Neutrons-in the nucleus. Neutrally charged (no charge) • Electrons-much smaller particles on the outside of the nucleus on the energy level. Negatively charged (-)

  6. Oxygen atom (O) outermost energy level: 6 electrons (-) Nucleus:8 protons (+)8 neutrons inner energy level: 2 electrons (-) Energy levels: electrons are located here. Inner levels only have 2 electrons, other levels hold up to 8. Energy Levels

  7. What can you notice about these elements’ proton numbers and electron numbers? 26 P 26 E 30 N Iron 50 P 50 E 69 N Tin 79 P 79 E 118 N Gold Proton # = Electron # !!!! 13 P 13 E 14 N Aluminum

  8. *Atoms have equal numbers of positively charged protons and negatively charged electrons so they are... electrically neutral!!!! +5 + (-5) = ??? +5 + (-5) = 0 79 P 79 E 118 N Gold

  9. An element is one or more atoms of the same type. • It cannot be broken down into a simpler substances • Ex: Oxygen, Hydrogen, Iron… gold aluminum

  10. Atoms of different elementsdiffer in the number of protons they have. The proton # never varies. 26 P 26 E 30 N Iron 50 P 50 E 69 N 79 P 79 E 118 N Tin Gold Ex: Gold has 79 protons no matter what 13 P 13 E 14 N Aluminum

  11. A molecule is two or more atoms held together by covalent bonds. covalent covalent Hydrogen

  12. _ O H H + + • A compound is made of 2 or more different elementsbonded together in a certain ratio. Ex: H20 • water (H2O) • -carbon dioxide (CO2) • Carbon dioxide (CO2) O C O

  13. All compounds are molecules • NOT all molecules are compounds • Ex: O2 O O * Remember compounds are composed of 2 different elements

  14. Atoms Positive charge Proton # identifies element Nucleus: most mass of atom No electrical charge Neutron About same size as proton Atom: smallest basic unit of matter Is surrounded by Negative charge Electrons # equals # of protons Cloud: most volume of atom Forms chemical bonds Inner level only 2 Protons Energy Levels Other levels up to 8 Protons Tries to fill outer level

  15. HOMEWORK On pg. 10 please create a double bubble map comparing and contrasting compounds and molecules. Compounds molecules

  16. Double-bubble map comparing and contrasting compounds and molecules Atoms held together by covalent bonds Both involve bonding atoms Involve two or more different elements Compounds molecules molecules Atoms in both Not all molecules are compounds

  17. Sponge: Set up Cornell Notes on pg. 13 The topic or heading will always be at the top of the Powerpoint. Include the # Ex: 2.1 Atoms, Ions, and Molecules Essential Question: How do ions form? Compare Ionic and Covalent bonding. Don’t forget to add it to your T.O.Contents! 2.1 Atoms, Ions, and Molecules How do Ions form? Compare Ionic and covalent bonding.

  18. Q: Because all atoms are made of the same types of particles (protons, neutrons, and electrons), what difference among atoms makes one element different from other elements? Aluminum Iron Tin A: Atoms of different elements differ in the number of protons they have.

  19. Understanding how an ion forms ionic bonds and covalent bonds is important because ions play large roles in organisms. • They are important in all biological processes. A few examples are: • They play a role in muscle contraction and cell shape • Chloride (Cl-) is a chemical the human body needs for metabolism (the process of turning food into energy) • Calcium ions (Ca2+) are necessary for every muscle movement in your body

  20. An ion is an atom that has gained or lost one or more electrons (-) - + 11 P (+) 10 E (-) 17 P (+) 18 E (-) 11 p 17 p

  21. - Positive Ions: If an atom has few electrons in its outer energy levels it tends to lose those electrons and become a POSITIVELY charged ion Negative Ions: If an atom has a nearly full outer energy level it tends to gain electrons and become a NEGATIVELY charged ion Energy level

  22. *An ion forms because an atom is more stable when its outermost energy level is full.

  23. *An ion forms because an atom is more stable when its outermost energy level is full.

  24. Ionic bonds form between oppositely charged ions. Dissolve in H2O. “Opposites Attract!!!!” Now we have salt!!!!

  25. covalent bonds • Share electrons in outer energy level • Can have multiple bonds • Strong bonds covalent covalent H2O Aka Water! Hydrogen

  26. CLASSWORK On pg. 13 create a double bubble map comparing and contrasting ionic bonds and covalent bonds. Ionic Bonds Covalent Bonds

  27. Double bubble map comparing and contrasting ionic bonds and covalent bonds Bonds ions Form between oppositely charged ions Share electrons bonding Covalent Bonds Ionic Bonds Bond atoms Dissolve in H2O Strong Bond

  28. Turn to pg. 12 of your I.N.B Under the picture of the positive and negative ion- Please title it “Science Matters” “Science Matters”

  29. “Science Matters” • Draw the atoms that are described below. Remember what you have learned about where each one of the particles are located in an atom. Use red for protons, black for neutrons, and blue for electrons. • 1. Nitrogen: • Protons: 7 • Neutrons: 7 • Electrons: 7

  30. “Science Matters” • Draw the atoms that are described below. Remember what you have learned about where each one of the particles are located in an atom. Use red for protons, black for neutrons, and blue for electrons. • 1. Nitrogen: • Protons: 7 • Neutrons: 7 • Electrons: 7

  31. Classwork • Complete “Science Matters” worksheet • 3 Atom pictures • 10 multiple choice questions • Write the ? and the answer • When you are done you are to work on your summaries for 2.1 (you need 2) and complete any unfinished double-bubble maps • Questions (4-6) • Table of Contents complete

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