Unit 5 Chemical Bonding Test:
• Distinction between elements and compounds; properties of each; same elements may form different compounds
• Reading chemical formulas: compound names, element names, number and ratio of atoms
• Chemical bonds between atoms involve electrons
• Ionic Bonds: result from electron transfer; reading superscript of ions; examples of ionic bonds; types of elements forming ionic bonds; properties of ionic compounds (also found in 2-3)
• Covalent Bonds: result from electron sharing; examples of covalent bonds AND polar covalent bonds; types of elements forming covalent bonds; properties of covalent compounds (also found in 2-3)
• Metals have unique bonds (sea of electrons)
• Ionic and covalent bonds give compounds different properties
| 1280422893 | The force of attraction between positive and negative ions. Metal and nonmetals. | Ionic Bond | 0 | |
| 1280422894 | A substance made up of two or more different types of atoms bonded together | Compound | 1 | |
| 1280422895 | Uses chemical symbols to represent the atoms of the elements and their ratios in a chemical compound | Chemical Formula | 2 | |
| 1280422896 | A number written to the right of the chemical symbol and slightly below it | Subscript | 3 | |
| 1280422897 | When the last energy level of an atom is full (usually 8 electrons) the atom is stable | Octet Rule | 4 | |
| 1280422898 | The number that follows the + or - sign when the ion number is shown. It represents the charge of the ion. | Oxidation Number | 5 | |
| 1280422899 | A negative ion | Anion | 6 | |
| 1280422900 | A positive ion | Cation | 7 | |
| 1280422901 | The elements in Groups 3-12 are transition metals and the metals under the staircase. | Transition Metals | 8 | |
| 1282204583 | A monatomic ion is an ion that has how many atoms? | 1 | 9 | |
| 1282204584 | The force that holds two atoms together is a | chemical bond | 10 | |
| 1282204585 | Ions are formed when an atom ________ or _________ an electron. | gain, lose | 11 | |
| 1282204586 | The electrostatic force that holds oppositely charged particles together is a(n) | ionic bond | 12 | |
| 1282204587 | ________ are located in the outer most/last energy level of an atom. | Valence electrons | 13 | |
| 1282204588 | True or False: A chemical formula is a way of writing the name of a compound using chemical symbols and subscripts to identify the type & number of each element | true | 14 | |
| 1282204589 | True or False: Compounds consist of two or more different elements that are physically joined. | false; they are chemically joined | 15 | |
| 1282204590 | According to the octet rule, MOST elements are stable when ___________. | they have 8 valence electrons. | 16 | |
| 1282204591 | Which of the following is an example of an ionic compound? H2O, CaO, SiO2 or N2O5 | CaO because it is the only one that contains a metal/cation | 17 | |
| 1282204592 | Which is not an example of a ternary compound? Mg(NO2)2, NH4OH, MgSO4 or SrO | SrO. Ternary compounds consist of three or more different elements. | 18 |
