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Chapter 1- Chemical Bonding

Chapter 1- Chemical Bonding. Section 1: pages 4-7 Electrons and Chemical Bonding. Bellringer. How many words can you make from the word science?. CEE CEES CENSE CINE CINES EN ENS ES ICE ICES IN INS IS NEE NICE NIECE NIECES SCENE SCENIC SCIENCE SEC SEE SEEN SEI

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Chapter 1- Chemical Bonding

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  1. Chapter 1- ChemicalBonding Section 1: pages 4-7 Electrons and ChemicalBonding

  2. Bellringer How many words can you make from the word science? CEE CEES CENSE CINE CINES EN ENS ES ICE ICES IN INS IS NEE NICE NIECE NIECES SCENE SCENIC SCIENCE SEC SEE SEEN SEI SEINE SEN SI SIC SICE SIN SINCE SINE

  3. Identify the elements in these compounds. • Are these compounds similar to each other? C6H12O6 C2H5OH C6H8O6 C6H8O7 The atoms of just three elements (C,H,O) combine to form sugar, alcohol, and citric acid.

  4. Chemical Bonding – the joining of atoms to form new substances. VOCABULARY Chemical Bond – a force of attraction that holds two atoms together. Valence Electrons – the electrons in the outermost energy level of an atom. These are the electrons involved in forming chemical bonds.

  5. Electrons are tiny, very light particles that have a negative electrical charge (-). Electron Number and Organization Protons are much larger and heavier than electrons and have a positive charge Neutrons are large and heavy like protons, however neutrons have no electrical charge.

  6. Electron Number and Organization Atomic Number tells you the number of protons and electrons in the atom.

  7. Valence Electrons are the electrons in the outermost shell. It is these electrons that form bonds. Valence Electrons and Bonding

  8. The number of some Valence Electrons is determined by its periodic table group.

  9. Families on the Periodic Table • Elements on the periodic table can be grouped into families bases on their chemical properties. • Each family has a specific name to differentiate it from the other families in the periodic table. • Elements in each family react differently with other elements.

  10. Each row is called a “period” The elements in each period have the same number of shells 1st Period = 1 Shell 2nd Period = 2 Shells 3rd Period = 3 Shells 4th Period = 4 Shells www.chem4kids.com

  11. Groups Group 8 = 8 electrons Group 1 = 1 electron Except for He, it has 2 electrons Group 2 = 2 electrons Each column is called a “group” 3,4,5,6,7 Each element in a group has the same number of electrons in their outer orbital, also known as “shells”. The electrons in the outer shell are called “valence electrons” www.chem4kids.com

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