<em>Answer:</em><em>Take your coin or piece of jewelry, and place a strong magnet on top see if the magnet sticks to the object by the magnetic pull, or if it slides off onto the ground. If the metal attracts the magnet, you know it must be an alloy mixture and not a precious metal.</em>
4) a question with more than one answer! :D
1.B 2.C 3.C 4.A 5.C 6.B 7.D 8.? 9.D 10.D
Dont know no. 8 tho hope this help
Answer:
movement or series of moves requiring skill and care.
Explanation:
If the frequency of the sound is increased then the pitch will also increase.