1. 8th 4.2 Ionic and Covalent Bonds
Chemical Bonds
8th 4.2 Ionic and Covalent Bonds

2. Ionic and Covalent Bonds
Ion – atom that loses or gains an electron
If an atom gains an electron = negative (-)
If an atom loses an electron = positive (+)
Ionic Bond – bonds created from elements losing or gaining electrons
Na+ Cl- come together to make NaCl

5. Ionic and Covalent Bonds
Compound – pure substance that contains 2 or more elements
Covalent Bond – share electrons
Creates full outer electron shell
Molecule – substance created by 2 elements

7. Ionic and Covalent Bonds
Polar Molecule – unbalanced charges (poles)
Non-polar molecule – balanced charges
Chemical formula – combination of chemical symbols of elements that tells what elements are present
H2O 2H2S 4(CH3OH) 2H H2