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WARM UP

Explore the basics of matter, atoms, and elements through a discussion on the periodic table. Learn about chemical properties, bonds, and the formation of molecules.

gertrudejohnson
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WARM UP

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  1. WARM UP • Brainstorm about the following… • You may do one, or all three. • Molecules • Atoms • Building Blocks of Life

  2. TODAYS AGENDA • Class Business • Finish Video

  3. Today’s Assignment • 10 Facts or Questions from the Video • Discussion at the end of class.

  4. Warm Up • List everything you know about the periodic table. Guess if you need too. • Do not list • Elements

  5. Agenda • Warm Up • CB • Matter: What is it? Activity – Complete in the front of your notebook. Stamped at the end of class. 2pts in your notebook

  6. CB • Make up Quizzes this week • O. 2-2 and 2-3 Should be complete by the end of this week or you will be very far behind for progress reports next week. • Notebooks collected next week for 5 week grade. Should be worth around 40-50 pts • About 20% of your grade

  7. LETS PRACTICE! Practice makes permanent, not perfect • Complete the worksheet in your NB • If you finish early, work on homework • Rules: • Ask three before me (Mr. Hagen) • Do not let the next table overhear your conversation • If I (Mr. Hagen) can speak in a normal tone, the class should be able to hear me.

  8. Homework • All previous assignments will not be collected after next week. • Outline 2-2 and 3 are due for full credit on or before Friday • Quiz on 2-1 on Friday • House tonight, Fox, 8/9pm

  9. WARM UP 6 C • Draw and label the Atomic Number and Atomic Mass for the element Carbon from the periodic table. • Refer to the back of the book • Draw and label the Proton, Neutron, and Electron for an atom of Helium • Refer to the Section 2-1 Carbon 12.011

  10. Modern Atomic Theory • Elements are composed of atoms, which are extremely small.  • All atoms of a given element have the same chemical properties and contain the same number of protons. • Compounds are formed by the chemical combination of two or more different kinds of atoms. (Whole numbers only) • Atoms are the units of chemical change

  11. The Nature of MatterChapter 2-1

  12. What’s the matter? • MATTER: • Anything that has mass and occupies space. • What is matter made of?

  13. What’s the “matter”? • Phases • Solid • Liquid • Gas • Physical properties versus chemical properties • Think about burning paper

  14. Atom • The basic unit of all matter • Made up of 3 parts: • Protons (positive) • Neutrons (neutral) • Electrons (negative) • Atomic number • # of protons • Atomic mass • # of protons + neutrons

  15. Elements • A pure substance that contains only one type of atom. • Hydrogen • Oxygen • Carbon • Iron • What is the difference between one element and another? • Each has a specific # of Protons

  16. Periodic Table • A whole bunch of different elements

  17. An Element in the Periodic Table Section 2-1 6 C Carbon 12.011 Go to Section:

  18. Figure 2-2 Isotopes of Carbon Section 2-1 Nonradioactive carbon-12 Nonradioactive carbon-13 Radioactive carbon-14 6 electrons 6 protons 6 neutrons 6 electrons 6 protons 7 neutrons 6 electrons 6 protons 8 neutrons Go to Section:

  19. Atoms versus Ions • Atoms have equal amounts of protons and electrons • Therefore, the net charge is ZERO • Ions have same number of protons, but more or less electrons • Therefore, it will have a net charge (+ or -)

  20. Molecules • When atoms join together, they form molecules • Smallest unit of compounds • H2

  21. Compounds and Bonding • Compound • A combination of two or more elements • Bonds • Bonds hold two or more elements together to form a compound

  22. Types of Bonds • Ionic Bond • When electron(s) are transferred from one element to another (One element gives electrons to the other element) • Makes IONS and they are attracted to each other. • Covalent Bond • When two elements share electrons

  23. Ionic Bond

  24. Covalent Bond

  25. Review • Atoms are the basic units of __________ • An Ion of Sodium (Na) that has 11 protons, but only 10 electrons will have a (positive/negative) charge • What is the type of bond in which electrons are shared by two elements? • A molecule must contain at least _______ atoms.

  26. WARM UP • Answer the following questions in 2-3 complete sentences. • What are the two types of bonds? • Explain the difference between the two. • What are Van der Waals Forces? • Refer to 2-1 pages 38-39

  27. CB

  28. Molecular Model Kits

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