level: Chapter 4: Topic 4.1 - 4.5
Questions and Answers List
level questions: Chapter 4: Topic 4.1 - 4.5
| Question | Answer |
|---|---|
| Ionic bonding is the electrostatic attraction between positive ions also known as (1) and negative ions, also known as (2) in an ionic crystal lattice. | 1. Cations 2. Anions |
| Weak forces between molecules are called ..... forces, also general term used to describe all..........forces. | van der Waals' forces intermolecular |
| What are 3 types of van der Waals forces | - Dipole (instantaneous dipole - induced dipole (id-id) forces also called London dispersion forces - Permanent dipole - permanent dipole (pd-pd) forces -Hydrogen bonding, which are stronger than (pd-pd) forces |
| how are positive and negative ions formed? | - Positive ions are formed when an atom loses one more electrons. Metal atoms usually lose electrons and form positive ions. - Negative ions are formed when atom gains one or more electrons. Non-metal atoms usually gain electrons and form negative ions |
| Metals combine with non-metal, the electrons in the outer shell of the of the (1) are transferred to the (2) | 1. Metal atoms 2. Non-metal atoms |
| Non-metal atom usually gain enough electrons to fill its outer shell, results in | Non-metal atom usually gains enough electrons to fill its outer shell this results in the metal atoms and non metal atoms usually end up with outer electrons shells that are complete: They have electronic configuration of a noble gas. |
| A dot-and-cross diagram shows: (3) | - outer electrons shells only - Charge of ion is spread evenly, by using square brackets - Charge on each ion, written at top right-hand corner |