It becomes rusty
When a metal is burned, it can form metal oxides by reacting with oxygen in the air. For example, when iron is burned, it forms iron oxide (rust).
When sugar burns, it creates a new substance. It's not possible that it's a physical change. So, it's a chemical change !
Water H20, Carbon Dioxide (CO2) and ash (potassium salts etc).
The substance formed in a chemical change is called Product.
It becomes rusty
When a metal is burned, it can form metal oxides by reacting with oxygen in the air. For example, when iron is burned, it forms iron oxide (rust).
The change were new material is produce is called chemical change.
But it IS a chemical change. When carbon burns in oxygen it forms carbon dioxide with the release of energy and the formation of a new substance. This is a chemical change and can be represented by the equation: C (s)+ O2(g) = CO2(g)
Chemical.
Chemical duhhh
Tarnishing of metal is a chemical change because it involves a reaction between the metal and substances in the environment (such as oxygen or sulfur compounds) that forms a new compound on the surface of the metal, altering its properties.
When sugar burns, it creates a new substance. It's not possible that it's a physical change. So, it's a chemical change !
Water H20, Carbon Dioxide (CO2) and ash (potassium salts etc).
it is a completely new object.
When a metal oxide reacts with water, it forms a metal hydroxide. This is a chemical reaction where the metal oxide molecule combines with water molecules to produce a new compound. The reaction typically generates heat and produces hydroxide ions in the solution.
The formation of an oxide when sodium metal is heated with oxygen is a chemical change. This is because a new substance (sodium oxide) with different chemical properties is formed due to a chemical reaction between sodium and oxygen. It involves the rearrangement of atoms at a molecular level.