Covalent Bonding, Electronegativity, and Bond Polarity (Sections)
In the following pairs of binary compounds determine which one is a molecular substance and which one is an ionic substance. Use the appropriate naming convention (for ionic or molecular substances) to assign a name to each compound: (a) TiCl4 and CaF2, (b) ClF3 and VF3, (c) SbCl5 and AlF3.
The Atomic Theory • In 1808, John Dalton formulated a precise deﬁnition of matter that we call atoms 1. Elements are composed of extremely small particles called atoms 2. All atoms of a given element are identical. The atoms of one element differ from the elements of another. - Ex) Gold atoms in a bar and gold atoms in a coin are the same. Gold and silver atoms are not the same. 3. Compounds are composed of atoms of more than one element. In any given compound, the same types of atoms are always present in the same relative numbers. - Ex) All 2 0 molecules always have 2 hydrogens and one oxygen. 4. A chemical reaction rearranges atoms in chemical compounds; it d