Which of the following is/are the example/examples of chemical change?1.Crystallization of sodium chloride2.Melting of ice3.Souring of milkSelect the correct answer using the code given below1 pointa) 1 and 2 only(b) 3 only(c) 1, 2 and 3(d) None
Question
Which of the following is/are the example/examples of chemical change?1.Crystallization of sodium chloride2.Melting of ice3.Souring of milkSelect the correct answer using the code given below1 pointa) 1 and 2 only(b) 3 only(c) 1, 2 and 3(d) None
Solution
To determine which of the given options are examples of chemical change, let's analyze each one:
-
Crystallization of sodium chloride: Crystallization is a physical change, not a chemical change. It involves the formation of a solid crystal structure from a solution or a melt. Therefore, this option is not an example of a chemical change.
-
Melting of ice: Melting is also a physical change. It occurs when a solid substance, in this case, ice, changes into a liquid state due to an increase in temperature. So, this option is not an example of a chemical change either.
-
Souring of milk: Souring of milk is a chemical change. It occurs when bacteria present in milk convert lactose (a sugar) into lactic acid, causing the milk to become sour. This change in composition is a chemical reaction, making this option an example of a chemical change.
Based on the analysis above, the correct answer is (b) 3 only.
Similar Questions
Which of the following is an example of a chemical change?A.Sugar breaking down into water and carbon when it is heatedB.A sugar cube being crushed by a spoonC.Sugar mixing with red food coloring and forming a red solidD.A sugar cube dissolving in water as the water is stirredSUBMITarrow_backPREVIOUS
All of the following are examples of chemical change EXCEPT:Group of answer choicesa) the condensation of steam.b) the rusting of iron.c) the combustion of propane gas.d) the tarnishing of silver.e) the decomposition of water to hydrogen gas and oxygen gas.
Which of the following is an example of a chemical change?A.A solid reacting with a gas to form a new solidB.A liquid evaporating into a gasC.A mixture of a solid and a liquid formingD.A solid dissolving in a liquid
Which of the following is a chemical change?*1 pointA) Ice melting into waterB) Sugar dissolving in waterC) Wood burningD) Cutting a piece of paper
Which of the following best describes a chemical change? Group of answer choicesDry ice becoming carbon dioxide gasBurning fuel in a lampClouds forming from water vaporDissolving table salt in water
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.