Which of the following substances contains a nonpolar covalent bond?
a) nacl
b)h2
c)hbr
d)cacl2

How do you lengthen a pattern piece? (family and consumer science, sewing)

Which substance is a steroid? cholesterol fatty acid monosaccharide trans fat

Which of your 24 wells had indications that a chemical reaction occurred? how were you able to tell that a chemical reaction occurred? which of your 24 wells had indications that a physical reaction occurred? how were you able to tell that a physical reaction occurred? report on both mixing and evaporation. make a general statement about whether your hypotheses were validated or rejected. must your hypotheses be correct for this to be a successful laboratory?