GK
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
melting crayons
|
|
|
decaying leaves
|
|
|
ripening pear
|
|
|
burning logs
|
|
|
flour mixed with water
|
Detailed explanation-1: -Answer and Explanation: The mixture of water and flour forming a dough is a heterogeneous mixture that has the properties of a suspension. A suspension is a mixture in which the solute particles are larger in size and thus can be seen with the naked eye.
Detailed explanation-2: -Q-6: Which of the following does not represent a chemical change? Explanation: When water freezes, its state changes from liquid to solid. Because the physical state of water is changing, it is considered as a physical change.
Detailed explanation-3: -Dissolving and mixing: Simple forms of dissolving and mixing are considered physical changes, but mixing the ingredients of a cake is not a simple mixing process. A chemical change starts to occur when the ingredients are mixed, forming new substances.