write minimum five chemical changes and make them more informative
Answers
Answer:
change of iron to rust
Burning of paper and log of wood
Digestion of food
Boiling an egg
Chemical battery usage
Electroplating a metal
Baking a cake
Milk going sour
Various metabolic reactions that take place in the cells
Rotting of fruits
Decomposition of waste
The explosion of fireworks
The reaction between salts and acids.
Rusting of iron
Lightening a matchstick
Explanation:
Answer:
Burning wood : Burning is a non-reversible chemical change. When you burn wood, the carbon in the wood reacts with oxygen in the air to create ash and smoke, and energy in the form of light and heat. This is a permanent change that cannot be undone – you cannot turn ashes back into wood.
Mixing acid and base : When an acid and a base are placed together, they react to neutralize the acid and base properties, producing a salt. The H(+) cation of the acid combines with the OH(-) anion of the base to form water. The compound formed by the cation of the base and the anion of the acid is called a salt.
Cooking an egg : High heat causes the protein in eggs to become tough and rubbery. When you use high heat to boil an egg, it causes a chemical reaction between the yolk and the white that leaves a green film around the yolk. That film is iron sulfide, caused by iron in the yolk reacting with hydrogen sulfide in the white.
Baking a cake : Baking a cake is a chemical change because the baking powder or soda whichever one undergoes a chemical reaction. Heat helps baking powder produce tiny bubbles of gas, which makes the cake light and fluffy. Heat causes protein from the egg to change and make the cake firm.
Rusting of iron : when the iron is exposed to air and moisture, rust formation takes place. Rust is nothing but Iron Oxide; a new substance formed out of the reaction. Hence, rusting of iron is a chemical change.
Explanation:
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