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What is a physical change melting ice or burning paper or rusting iron or burning gasoline?
Meting ice: you start with H2O and finish with H2O
How is iron rusting and paper burning different?
It all has to do with rate of oxidisation; what we call burning is a very rapid chemical reaction, the faster it is, the more heat it releases in a certain amount of time. by baby girl23 and friend
Why the rusting of an iron pole is not physical change?
The rusting of an iron pole is a chemical change. An example of a chemical change would be crumbling a piece of paper. When you are crumbling this piece of paper, the contents of the paper have not change and you are able to uncrumble the paper there is no difference except the paper has wrinkles. :) However in an example of chemical change like a metal rusting, you cannot un-rust it, it was chemically changed. Another example of a chemical change would be burning a piece of paper to ashes.
How is rusting and burning alike?
Both processes require Oxygen. Rusting (I think) is where metal reacts with oxygen and moisture and becomes oxidises. Burning or combustion, ALWAYS needs Oxygen to occur. Hope this helps!
Why the rusting of an iron pole is not a physical change?
The rusting of an iron pole is a chemical change. An example of a chemical change would be crumbling a piece of paper. When you are crumbling this piece of paper, the contents of the paper have not change and you are able to uncrumble the paper there is no difference except the paper has wrinkles. :) However in an example of chemical change like a metal rusting, you cannot un-rust it, it was chemically changed. Another example of a chemical change would be burning a piece of paper to ashes.
What is a chemical reaction melting ice rubbing a marker on paper burning a candle rusting iron?
Melting ice is a physical change as it involves a change in state from solid to liquid without changing the chemical composition. Rubbing a marker on paper involves a physical process of transferring ink from the marker to the paper, without any new chemical reactions occurring. Burning a candle is a combustion reaction where the wax reacts with oxygen to produce heat, light, carbon dioxide, and water vapor. Rusting iron is a chemical process where iron reacts with oxygen and moisture in the air to form iron oxide.
What are examples of chemical and physical change?
melting any metal is physical. rusting iron is chemical
Why rusting of iron considered as a combustion process?
Because it's the "burning" of iron in oxygen. It's just slow.
What are three chemical changes that do not require living organisms?
=>Rusting of iron =>Melting of sugar =>Burning of paper
What are some examples of chemical and physical changes grade 5?
Physical - Breaking of glass Boiling of water Melting of ice Cutting of vegetables Chemical - Burning of paper Cooking of food Rusting of iron Souring milk
Chemical reaction examples?
Fire Burning,Iron Rusting
Is a rusting paper clip a physical or chemical change?
Rusting of a paper clip is a chemical change. It involves the iron in the paper clip reacting with oxygen in the air to form iron oxide (rust). This change is not reversible and results in a new substance with different properties.
