In chemistry class, Katy is doing a lab about chemical changes. Some of her recorded observations include: Mg metal – burned - bright light – produced white/gray powder. Zinc metal – dissolved in HCl. Sucrose – burned to black – distinct odor. Of the following choices, which best represents contrasting observations from Katy’s lab?
ANSWERS BELOW

Question

In chemistry class, Katy is doing a lab about chemical changes.  Some of her recorded observations include:  Mg metal – burned - bright light – produced white/gray powder.  Zinc metal – dissolved in HCl.   Sucrose – burned to black – distinct odor.   Of the following choices, which best represents contrasting observations from Katy’s lab?
ANSWERS BELOW

anonymous · Answer

a.
Sucrose burned to black, Zinc metal dissolved in HCl
b.
Mg metal burned with bright light, Zinc metal dissolved in HCl
c.
Mg metal burned and produced white/gray powder, Sucrose burned to black
d.
Mg metal burned and produced white/gray powder, Mg metal burned with bright light