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Combining Matter Chapter 3 Section 2. Compounds Compounds are substances composed of atoms of two or more elements combined chemically Represented by.

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Presentation on theme: "Combining Matter Chapter 3 Section 2. Compounds Compounds are substances composed of atoms of two or more elements combined chemically Represented by."— Presentation transcript:

1 Combining Matter Chapter 3 Section 2

2 Compounds Compounds are substances composed of atoms of two or more elements combined chemically Represented by chemical formulas NaCl H 2 0 How many atoms from each element are in the compound H 2 SO 4 ?

3 Covalent Bonding Elements in a compound are held together by chemical bonds Covalent bonding involves a sharing of electrons A molecule is composed of two or more atoms held together by covalent bonds Polar molecules result from an unequal sharing of electrons

4 Ionic Bonds Ionic bonds form when a transfer of electrons occur from one atom to another Sodium and Chlorine are combined by ionic bonding to form table salt

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