minileiva211
29.10.2020 •
Chemistry
Item 10
What color do acids turn litmus paper?
yellow
red
pink
blue
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Ответ:
red
Explanation:
blue litmus paper turns red under acetic conditions and red lettuce paper turns blue under basic and alkaline conditions with the color change occurring over the PH range the neutral litmus paper is purple
Ответ:
burning wood be a chemical change because it wouldn’t be able to go back to its original form. A physical change would be a broken pencil. The pencil is still a pencil, it’s just a physical change.But if it were burned it would be a chemical change.
Explanation: