Chemistry 1.2 & 1.3 Chemical 8.1 *Atoms combine to form It Isn’t Love, What’s Going On?” “If – molecules by sharing Chemistry songbag Unit: 5 & 6 electrons to form covalent or metallic bonds or by exchanging electrons to form ionic bonds. *Salt crystals, such as NaCl, are repeating patterns of positive and negative ions held together by electrostatic attraction. *Chemical bonds between 8.2 atoms in molecules such as H2, CH4, NH3, Lab 8.1 (properties) H2CCH2, N2, Cl2, and many biological Lab 8.2 (formation of a salt) molecules are covalent. *Lewis dot structures can ChemLab 8 (p. 232 - making provide models of atoms ionic compounds) and molecules. *The shape of simple 9.1 molecules and their polarity can be predicted Discovery Lab (p. 241 oil – from Lewis dot and vinegar) structures. *Electronegativity and Lab 9.1 ionization energy are related to bond formation 9.2 Quick demo p. 265 salt – – and sugar how to tell – Chromatography lab difference (chem.lab 9 p. 268 or similar lab) 9.5
Unit: 5 & 6 Chemistry 1.2 & 1.3 Chemical *Atoms combine to form molecules by sharing electrons to form covalent or metallic bonds or by exchanging electrons to form ionic bonds. *Salt crystals, such as NaCl, are repeating patterns of positive and negative ions held together by electrostatic attraction. *Chemical bonds between atoms in molecules such as H2, CH4, NH3, H2CCH2, N2, Cl2, and many biological molecules are covalent. *Lewis dot structures can provide models of atoms and molecules. *The shape of simple molecules and their polarity can be predicted from Lewis dot structures. *Electronegativity and ionization energy are related to bond formation 8.1 8.2 Lab 8.1 (properties) Lab 8.2 (formation of a salt) ChemLab 8 (p. 232 - making ionic compounds) 9.1 Discovery Lab (p. 241 – oil and vinegar) Lab 9.1 9.2 Quick demo – p. 265 – salt and sugar – how to tell difference 9.5 “If It Isn’t Love, What’s Going On?” – Chemistry songbag Chromatography lab (chem.lab 9 p. 268 or similar lab)