Chemistry homework on Physical changes!?
Consider the following properties:
I) The boiling point of ethanol is 78◦C.
II) Objects made of silver become tar-
nished.
III) The red color of rubies is due to the
presence of chromium ions.
Which is/are physical?
1. I only
2. II only
3. II and III only
4. III only
5. None of these
6. I and III only
7. I and II only
8. I, II and III
More Questions From This User See All
Answers & Comments
Verified answer
Boiling is a physical change as it involves change from liquid to gas
Objects made of silver become tarnished due to chemical change Ag + S = AgS(black color)
Color is a physical change
The correct answer is,therefore, I and III
No.8
ok so I basically found out this. nicely relearned it could be greater perfect. A chemical exchange is a metamorphosis wherein various of aspects grow to be completely new aspects with distinctive residences. Examples of Chemical ameliorations: shade exchange, precipitate types(stable), scent, absortation, capability exchange, combustibility, etc. A actual exchange happens while a metamorphosis in a substance that doesn't exchange interior the identity of the substance. Examples contain: melting factor, boiling factor, freezing factor, volume of liquid, tearing paper, etc.
Boiling Point & Color are physical properties, Tarnishing usuallu happens due to chem rxns.
One and three.
Two is a chemical change