Webb17 sep. 2024 · Rusting of iron is a chemical change because a reddish-brown layer (rust) forms over the surface of iron when iron reacts with oxygen and moisture present in the atmosphere. In this process, the chemical composition of iron changes and a new substance, i.e., rust is formed. What is rusting short answer? Webb(d) Rusting, combustion and burning involve chemical changes. Melting of wax is a physical change. Question 2: Which one of the following is a chemical change? (a) Twinkling of stars (b) Cooking of vegetables (c) Cutting of fruits (d) Boiling of water Answer: (b) Cooking of vegetables involves many chemical changes. Question 3:
Class 7 Science MCQ Questions of Physical and Chemical Changes with …
Webb22 sep. 2024 · Rust is nothing but Iron Oxide; a new substance formed out of the reaction. The colour of the surface of the iron also changes. Hence, rusting of iron is a chemical … Webb13 aug. 2024 · Rust is clearly a substance that is different from iron. Rusting is an example of a chemical change. A chemical property describes the ability of a substance to … mitcham bbq
How Does Rust Form? Sciencing
Webb12 okt. 2024 · The rusting of iron is a chemical change because it is two substances reacting together to make a new substance. When iron rusts, iron molecules react with … Webb23 nov. 2024 · The explosion of nitroglycerin is a chemical change because the gases produced are very different kinds of matter from the original substance. When rust forms … WebbThe color of rust is a physic property. The important difference between physiology and chemically properties is this fact the you can observe physical land without changing the your the the substance or object. This unable be enunciated for chemical assets, whichever can just subsist observed although a substance reacts with another substances, being … mitcham boots