1. Chemical Bonds and Compounds
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Chemical Bonds and Compounds
the BIG idea
The properties of compounds depend on their atoms and chemical bonds.
6.1
Elements combine to form compounds.
6.2
Chemical bonds hold compounds together.
6.3
Substances’ properties depend on their bonds.
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2. Elements combine to form compounds.
6.1
Elements combine to form compounds.
• Compounds have different properties from the elements that made them.
chemical formula
• Atoms combine in predictable numbers.
subscript + =
calcium (Ca)
chlorine (Cl2)
calcium chloride
(CaCl2)
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OUTLINE

3. Chemical bonds hold compounds together.
6.2
Chemical bonds hold compounds together.
• Chemical bonds between atoms involve electrons.
ionic bond
• Atoms can transfer electrons.
• Atoms can share electrons.
covalent bond
• Chemical bonds give all materials their structure.
molecule
polar covalent bond
ionic bond
polar covalent
bond
covalent bond
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OUTLINE

4. Chemical bonds hold compounds together.
6.2
Chemical bonds hold compounds together.
• Chemical bonds between atoms involve electrons.
ionic bond
• Atoms can transfer electrons.
• Atoms can share electrons.
covalent bond
• Chemical bonds give all materials their structure.
molecule
polar covalent bond
VISUALIZATON
Examine how electrons move in a polar covalent molecule.
VISUALIZATION
Watch an animation showing ionic and covalent bonding.
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5. Substances’ properties depend on their bonds.
6.3
Substances’ properties depend on their bonds.
• Metals have unique bonds.
• Ionic and covalent bonds give compounds certain properties.
metallic bond
• Bonds can make the same element look different.
copper
graphite fragment
diamond fragment
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OUTLINE

6. 6.1 Elements combine to form compounds.
I. Elements combine to form compounds.
chemical formula
A. Compounds have different properties from the elements that make them.
subscript
B. Atoms combine in predictable numbers.
1. Chemical Formulas
2. Same Elements, Different Compounds
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KEY CONCEPT
SUMMARY

7. Chemical bonds hold compounds together.
6.2
Chemical bonds hold compounds together.
II. Chemical bonds hold compounds together.
ionic bond
A. Chemical bonds between atoms involve electrons.
covalent bond
B. Atoms can transfer electrons.
molecule
1. Ionic Bonds
polar covalent bond
2. Names of Ionic Compounds
C. Atoms can share electrons.
1. Covalent Bonds
2. Polar Covalent Bonds
D. Chemical bonds give all materials their structures.
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1. Ionic Compounds
KEY CONCEPT
SUMMARY
2. Covalent Compounds

8. Substances’ properties depend on their bonds.
6.3
Substances’ properties depend on their bonds.
III. Substances’ properties depend on their bonds.
metallic bond
A. Metals have unique bonds.
B. Ionic and covalent bonds give compounds certain properties.
C. Bonds can make the same element look different.
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KEY CONCEPT
SUMMARY

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