Fichas
Unit 5 notes
Fichas del conjunto (26)
- 1Valence ElectronsOutermost electrons
- 2Octet RuleMust have 8 electrons to be full
- 3CompoundCombination of two or more elements
- 4Why do elements form compounds?They want to be stable
- 5What are the three types of compounds?Ionic, molecular/covalent, metallic
- 6What are ionic compounds made of?Metal and Nonmentals
- 7What are covalent compounds made of?Nonmetals only
- 8What are metallic compounds made of?Metals only
- 9Are valence electrons available to be lost, shared or gained in a chemical bond?All of the above
- 10Why do atoms gain, lose, or share electrons (bond)?So they can have a full octet.
- 11What is an electric dot diagram?An elements symbol with its valence electrons drawn around it in dots.
- 12What is an ionic bond?Bond in which one atom gains an electron and one loses an electron
- 13How do elements achieve a full octet?By transferring electrons
- 14What do ions form?Cations and Anions
- 15What charge do cations have?Positive charge (metals)
- 16What charge do anions have?Negative charge (nonmetals)
- 17What is the total charge of a compound?Zero
- 18What (in the formula) tells you how many atoms of each element are present in the compound?Subscript
- 19CovalentSharing of electrons (tug of war)
- 20Non-polar covalentElectrons are shared equally
- 21Polar covalentBonded atoms have an unequal attraction for the shared electrons, charge is not distributed equally.
- 22Molecular formulaShows how many atoms of each element a molecule contains
- 23Diatomic moleculeMolecule consisting of two of the same atom
- 24How many pairs of electrons can covalent bonds share?Single, double, or triple
- 25What are the properties of ionic compounds?Hard, crystalline solids, brittle, water-soluble, high melting point, can conduct electricity
- 26What are the properties of covalent/molecular compounds?Soft, hard or flexible, usually less water-soluble, lower melting points, cannot conduct electricity.
Información
- Descripción
- Notes for the 5th unit of chemistry: chemical bonding
- Creado por
- Nadia Turley
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