WebQ. Alka-Seltzer gives off carbon dioxide when added to water. answer choices. physical change. chemical change. Question 7. 30 seconds. Q. Opening and shaking a hand warmer packet makes it heat up. answer choices. Web10 okt. 2024 · Academic Chemistry NCERT Class 7. The souring of milk is a chemical change. Milk that is spoiled is sour, with a foul taste and odour. It can also become lumpy and curdled. This is a change on a molecular level that cannot be reversed because they form some new substance. So it is an Irreversible and Permanent Change as souring …
Is the souring of milk a physical or chemical change?
WebMedium Solution Verified by Toppr In chemical processes (reactions) new substances appear, while in physical process, like boiling no new substance appears. Both liquid and gas is the same substance (water H 2O ). Was this answer helpful? 0 0 Similar questions Is boiling point considered a physical or chemical change? Medium View solution > WebEach process requires milk to undergo a physical or a chemical change. Physical changes can occur without altering the chemical composition of a substance. Physical changes can include changing the color, shape, state of matter, or volume of a substance. food web high school activity
Is milk souring a chemical reaction? Homework.Study.com
http://teiteachers.org/is-milk-spoiling-a-chemical-property-or-change Web10 nov. 2024 · Chocolate milk is a physical change because it is a mixture of two substances, milk and chocolate. The chocolate milk only changes its form when the chocolate is mixed with the milk, it does not change the chemical structure of either the milk or the chocolate. Despite this, water molecules are trapped in ice crystals, and thus … Web23 aug. 2024 · Chemical change requires a change on the molecular level so that it cannot be reversed because they form some new substance. Souring of milk is a reverse process and it produces new molecules. Another example of chemical change – Creation of new gas, bubbles, or changes in color like a formation of rust. food web including bees