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I will use this picture to let students understand the basic structure of an atom including electron orbits, electron, proton, neutron and nucleus.

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Students will learn that electrons carry negative charge, protons carry positive charge but neutrons are neutral. They will also learn atomic number and atomic mass.

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Students will learn that atoms with the same number of protons but different numbers of neutrons are called isotopes. They share almost the same chemical properties but differ in mass and therefore in physical properties.

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Using this picture, students will learn that in a periodic table, elements are arranged in order of increasing atomic number, Elements having similar chemical properties are placed in the same column (group).

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Students will learn that halogens are a group of elements located in group seven in the periodic table. All halogens have seven electrons in their outer shells giving them many unique properties.

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This diagram allows students to allow that an ionic bond forms when an atom donates an electron to another atom. Example: A bond formed between sodium and chlorine is ionic bond.

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Students will learn that a covalent bond is a bond formed between two or more similar or different atoms by sharing one or more pairs of electrons. An example of covalent bond is a water molecule.

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This picture allows students to learn that metallic bonding is a type of chemical bonding that arises from the electrostatic attractive force between conduction electrons and positively charged metal ions.

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Students will learn that metals are shiny, malleable, hard and good conductors of electricity. Examples, Gold and Silver. Non-metals do not conduct heat or electricity. They are brittle. Examples, Oxygen and Carbon.

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The right column of the periodic table contains seven elements known as inert or noble gases. They do not react with other elements. Examples, Helium, Neon, and Argon.