a compound is a pure substance composed of more than one atom a chemical bond is a mutual...
TRANSCRIPT
- Slide 1
- Slide 2
- A compound is a pure substance composed of more than one atom A chemical bond is a mutual electrical attraction between atoms in a compound Compounds can either be molecular or ionic
- Slide 3
- There are two types of bonding: 1. Ionic Bonds result from the transfer of electron from metal to nonmetal 2. Covalent Bonds result from the sharing of electrons between two atoms Polar covalent = unequal sharing Non-polar covalent = equal sharing
- Slide 4
- Composed of oppositely charged ions Composed of Metal + nonmetal Metals form cations (+) Low IE and low EA mean these atoms lose electrons readily Nonmetals form anions (-) high IE and high EA mean these atoms gain electrons readily Electrically neutral Formula unit: lowest whole # ratio of ions in the compound EX: NaCl, CaF 2
- Slide 5
- Solids at room temperature High melting point (>400 0 C) Soluble in water Conduct electricity when melted or dissolved in water
- Slide 6
- Composed of two or more nonmetals Involve covalent bonding (Electrons are shared) Sharing tricks each element into thinking that their outer shells are filled Molecule: smallest unit of a molecular compound Molecular formula: tells the type and number of atoms in a molecule Ex: H 2 O, CO 2, CO
- Slide 7
- low melting point (