Why do atoms gain or lose valence electrons?. TO BECOME STABLE Why do atoms gain or lose valence...
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Transcript of Why do atoms gain or lose valence electrons?. TO BECOME STABLE Why do atoms gain or lose valence...
![Page 1: Why do atoms gain or lose valence electrons?. TO BECOME STABLE Why do atoms gain or lose valence electrons?](https://reader033.fdocuments.net/reader033/viewer/2022061613/5a4d1b8b7f8b9ab0599bea81/html5/thumbnails/1.jpg)
• Why do atoms gain or lose valence electrons?
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TO BECOME STABLE
• Why do atoms gain or lose valence electrons?
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• Which group of elements are the most stable?
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NOBLE GASES
• Which group of elements are the most stable?
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• Why are noble gases stable?
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THEY HAVE A FULL SHELL OF VALENCE ELECTRONS
• Why are noble gases stable?
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• What does each dot represent in an electron dot diagram?
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EACH DOT REPRESENTS A VALENCE ELECTRON.
• What does each dot represent in an electron dot diagram?
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• Which elements generally have higher ionization energies?
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NONMETALS HAVE HIGHER IONIZATION ENERGY THAN METALS, NOBLE GASES ARE
HIGHEST
• Which elements generally have higher ionization energies?
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• What happens to valence electrons when atoms form ionic bonds?
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VALENCE ELECTRONS ARE TRANSFERRED OR GIVEN
AND TAKEN.
• What happens to valence electrons when atoms form ionic bonds?
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• What are the properties of ionic compounds?
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1. SOLID CRYSTALS.2. HIGH MELTING POINT.3. BRITTLE.
• What are the properties of ionic compounds?
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• Which types of atoms bond to form molecules?
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NONMETALS BOND TOGETHER TO FORM
MOLECULES
• Which types of atoms bond to form molecules?
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• What type of molecule is formed when two atoms of the same nonmetal join together?
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DIATOMIC MOLECULE
• What type of molecule is formed when two atoms of the same nonmetal join together?
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• What holds atoms together in an ionic bond?
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THE ATTRACTION BETWEEN POSITIVE CATIONS AND
NEGATIVE ANIONS
• What holds atoms together in an ionic bond?
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• What holds atoms together in a covalent bond?
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THE SHARED VALENCE ELECTRONS ATTRACT AND
HOLD THE ATOMS IN.
• What holds atoms together in a covalent bond?
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• What holds metal atoms together in a metallic bond?
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THE ATTRACTION BETWEEN A METAL CATION AND THE
SHARED SEA OF ELECTRONS
• What holds metal atoms together in a metallic bond?
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• Why are metals good conductors of electricity?
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THE SEA OF ELECTRONS ALLOWS ELECTRICITY TO
PASS THROUGH.
• Why are metals good conductors of electricity?
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• Why does water form drops or puddle up?
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WATER MOLECULES ARE POLAR AND ARE ATTRACED
TO EACH OTHER - COHESION.
• Why does water form drops or puddle up?
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• Which types of elements will always form cations or positive ions?
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METALS OR GROUP 1A, GROUP 2A AND GROUP 3A
• Which types of elements will always form cations or positive ions?
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• Which types of elements will always form anions or negative ions?
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NONMETALS, OR GROUP 5A, GROUP 6A AND GROUP 7A
• Which types of elements will always form anions or negative ions?
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• In an ionic compound, the positive and negative charges must add up to what sum?
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POSITIVE AND NEGATIVE CHARGES MUST ADD UP TO
ZERO.
• In an ionic compound, the positive and negative charges must add up to what sum?
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• In a chemical formula, which element is written first?
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METALS, POSITIVE CHARGES, OR LOWER
GROUP NUMBER GO FIRST.
• In a chemical formula, which element is written first?
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• When do you need to add a numerical prefix in a chemical name?
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WHEN NONMETALS FORM A COVALENT MOLECULE.
• When do you need to add a numerical prefix in a chemical name?
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• What does the subscript 2 mean in the formula H2O?
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THE SUBSCRIPT MEANS THERE ARE TWO HYDROGEN
ATOMS.
• What does the subscript 2 mean in the formula H2O?
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• What do roman numerals such as II, III or IV mean in a chemical name?
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A ROMAN NUMERAL INDICATES THE ION’S
POSITIVE CHARGE.
• What do roman numerals such as II, III or IV mean in a chemical name?
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• What is an alloy?
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A MIXTURE OF TWO OR MORE ELEMENTS AT LEAST ONE OF WHICH IS A METAL.
• What is an alloy?
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• What are some common alloys?
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STEEL – IRON AND CARBON.BRASS – ZINC AND COPPER.
AIRCRAFT ALUMINUM – ALUMINUM AND
MAGNESIUM.
• What are some common alloys?