Statement 1: Melting is a physical change because melting doesn't create a new substance. It only changes the state of the wax from solid to liquid.
Statement 2: Burning is a chemical change because once wax is burnt, the wax gets converted to new substances.
Which of these statements is correct?
Statement 1: Melting is a physical change because melting doesn't create a new substance. It only changes the state of the wax from solid to liquid.
Statement 2: Burning is a chemical change because once wax is burnt, the wax gets converted to new substances.
Which of these statements is correct?
The correct option is C Both 1 and 2 are correct
A physical change is one where we see a change in the shape, size, or state of a substance. There is no formation of new substances. For example, melting candle wax is a physical change. Melting only converts solid wax to liquid where the state of the wax changes. There is no new substanced formed.
A chemical change is one where we see a change in the chemical composition. New substances are formed. For example, burning wax converts wax to carbon dioxide and water. These are new substances. It also gives rise to fumes and a flame.
Both 1 and 2 are correct
A physical change is one where we see a change in the shape, size, or state of a substance. There is no formation of new substances. For example, melting candle wax is a physical change. Melting only converts solid wax to liquid where the state of the wax changes. There is no new substanced formed.
A chemical change is one where we see a change in the chemical composition. New substances are formed. For example, burning wax converts wax to carbon dioxide and water. These are new substances. It also gives rise to fumes and a flame.
