Search results
Results From The WOW.Com Content Network
1.burning of paper. 5.rotting of fruits. 8.mixing acid and base. 11.melting of sugar. 13.explosion of fireworks. ""Examples of chemical changes" are as follows:Burning wood.Souring milk.Combining base and acid.Digesting food.Cooking an egg.Making caramel from heating sugar….
A chemical change happens when one chemical substance is transformed into one or more different substances, such as when iron becomes rust. examples: 1.burning of paper. 2.cooking of food. 3.burning of wood. 4.ripening of fruits. 5.rotting of fruits. 6.frying egg. 7.rusting of iron.
20 examples of physical change. The change which does not affect the internal or chemical properties of a system is called a physical change. 20 examples of physical change are-. Boiling of water. Melting of ice. Conversion of water to vapour. Tearing of paper. Cutting a fruit. Freezing of water.
Rotting, burning, cooking, and rusting are all further types of chemical changes because they produce substances that are entirely new chemical compounds. For example, burned wood becomes ash, carbon dioxide, and water. When exposed to water, iron becomes a mixture of several hydrated iron oxides and hydroxides.
Select all that apply. Which of the following are examples of chemical changes? change in composition - 23445663
10}sublimation of dry ice. chemical change : 1}rusting of iron. 2}combustion (burning) of wood. 3}metabolism of food in the body. 4}mixing an acid and a base, such as hydrochloric acid (HCl) and sodium hydroxide (NaOH) 5}cooking an egg. 6}digesting sugar with the amylase in saliva. 7}mixing baking soda and vinegar to produce carbon dioxide gas.
Answer: example of useful chemical change: conversion of milk to curd. cooking of food. example of harmful chemical: rusting of iron. rotting of food.
Give 5 examples of physical and chemical changes. 1.Melting of ice or wax. 2. Changing of water into steam by boiling. 3. Crystallization of salts from their salts. 4. Evaporation of water by the heat of sun. 5.
A change cannot be both chemical and physical but it can occur simultaneously in nature. For example, burning of a candle, it will burn down the wax changing the physical state of the candle and the combustion process will fall into the category of chemical change. Another example is digestion as physical food is chewed which change the shape ...
Physical changes : Melting of ice , boiling of water , freezing of water , condensation, crystalization , and heating of metals to red hot etc. Chemical changes : Formation of rust on the iron bench or articles of iron kept in the open for a long time,digestion of food , the reaction between vinegar and baking soda ,burning of magnesium ribbon etc.