EVERYDAY SCIENCE

SCIENCE

CHEMISTRY

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is not a clue that a chemical change has occurred?
A
change in the shape
B
change in color
C
production of a gas
D
formation of a precipitate
Explanation: 

Detailed explanation-1: -Color. The changing of color of a substance is not necessarily an indicator of a chemical change.

Detailed explanation-2: -Four possible clues to chemical change include a transfer of energy, a change in color, the production of a gas, or the formation of a precipitate.

Detailed explanation-3: -Complete answer: Boiling of water is not a chemical change it is a physical change.

Detailed explanation-4: -Hence, option (C) is correct. i.e., tearing of paper is not a chemical reaction.

Detailed explanation-5: -Color Change. Production of an odor. Change of Temperature. Evolution of a gas (formation of bubbles) Precipitate (formation of a solid) 02-Apr-2021

There is 1 question to complete.