Covalent compounds:
a)are formed from one metal and one nonmetal
b) exchange electrons in a chemical bond
c) have a low melting point
d)have weaker bonds than ionic compounds

which answer would be correct i think maybe b

Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass

Explain that newton first law,second law and third law of motion?

If we compare and contrast electromagnetic waves with sound waves, all but one statement is true. that is a) sound waves require a medium to travel while electromagnetic waves do not. b) electromagnetic waves can travel through the vacuum of space while sound waves cannot. c) electromagnetic waves must have a medium in which to travel, but sound waves can travel anywhere. eliminate d) sound waves must bounce off of matter in order to travel while electromagnetic waves do not require matter to be present.