Lessons 5-7 Quiz Review

3. An atom or molecule with a net electric charge due to the loss or gain of one or more electrons.
9. Highly reactive nonmetals found in Group 17 of the periodic table (e.g., fluorine, chlorine).
11. Electrons in the outermost shell of an atom, involved in forming bonds.
12. A compound made up of ions bonded together by ionic bonds.
13. Elements with properties that are intermediate between metals and nonmetals (e.g., silicon, arsenic).
16. Elements that are usually poor conductors of heat and electricity, often found as gases or brittle solids (e.g., oxygen, sulfur).
17. The energy levels where electrons are located around an atom's nucleus.
18. A model of the atom that shows electrons orbiting the nucleus in defined energy levels.
19. Inert gases found in Group 18 of the periodic table, very stable and unreactive (e.g., helium, neon).

1. Highly reactive metals found in Group 1 of the periodic table (e.g., sodium, potassium).
2. A type of chemical bond formed between two ions with opposite charges.
4. Elements in Group 2 of the periodic table, reactive but less so than alkali metals (e.g., calcium, magnesium).
5. A charicteristic of water that describes its partial positive charge on one side and a partial negative charge on the other.
6. A positively charged ion (e.g., Na⁺).
7. A negatively charged ion (e.g., Cl⁻).
8. Elements that are typically solid, shiny, good conductors of electricity, and malleable (e.g., iron, copper).
10. A diagram that shows the bonding between atoms and the lone pairs of electrons.
14. A type of chemical bond where atoms share electron pairs.
15. The principle that atoms tend to bond in such a way that they have eight electrons in their valence shell.