5 A+
A-
What is John Doe's blood type? A drop of his blood w zoom in
placed into each of the four circles on this blood type card.
And A serum was
And 8 serum was added
added to this circle
to this circle
(no clump=no A
cho clumpano B protein)
protein)
No cumping in the control
B
B-
AB+
AB-
John Doe's
Blood Type:
Ant-Rh serum was
added to this circle
Clump = Rh protein
present
0+

- "the choice that is not an indicator of a chemical change is "state of matter changes". more common than not, chemical reactions produce energy in the form of light or heat. along with energy, they also produce a new substance called the product that could be in any state of matter (solid, gas, or liquid)."

alchemy hadn't scientific methods of study, appeal to mysticism and fantasy, the knowledge of chemistry and physics were modest at that time.

alchemy was - but as new rules were discovered it either changed into chemistry or it became "unscientific".