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 transcript:

Combining Matter Chapter 3 Section 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 ?

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

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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