Physical Science Unit 2A

1. this bond occurs between a metal and a nonmetal
6. the force that holds atoms together
7. a positively-charged ion is called a(n) _____
8. covalent compounds have ____ melting points
10. covalent compounds are ______ when in their solid form
11. this group of elements tend to lose valence electrons and become positively-charged
13. covalent compounds are ____ or gases at room temperature
15. ionic compounds are ______, or hard
16. ionic compounds have _____ melting points

2. the ___ tells what elements a compounds contains and the exact number of atoms of each element
3. a negatively-charged ion is called a(n) _____
4. in an ionic bond electrons are ______
5. this group of elements tend to gain valence electrons and become negatively-charged
9. this bond forms between two nonmetals
12. ionic compounds are ___ at room temperature
14. in a covalent bond electrons are ______