Q: Q: What is the term for electric current that keeps reversing direction? A:

OPTIONS:
- direct current
- AC/DC
- magnetic current
- alternating current

A: alternating current

Q: Q: Where does an electron move to after it absorbs energy? A:

OPTIONS:
- another electron
- atomic orbit
- a shell closer to the nucleus
- a shell farther from the nucleus

A: a shell farther from the nucleus

Q: Q: Combined substances are either compounds or what? A:

OPTIONS:
- solutions
- concentrations
- combinations
- mixtures

A: mixtures

Q: Q: Aluminosilicates are formed by replacing some of the si atoms in silicates by which atoms? A:

OPTIONS:
- fe
- ce
- ad
- al

A:
al