Mass is either created or destroyed during a chemical change.

________ is neither created nor destroyed during a chemical reaction.

Energy is either absorbed or evolved during a chemical change.

Statement-I : Law of conservation of mass hold good for nuclear reaction. Because Statement-II : Law states that mass can be neither created nor destroyed in a chemical reaction.

Amongst the following statements, select the set having statements which was porposed by Dalton. (1) All the atoms of a given element have identical properties including identical mass. Atoms of different elements differ in mass. (2) When gases combine or reproduced in a chemical reaction they do so in a simple ratio by volume provided all gases are at the same T & P (3) Chemical reaction involve reorganization of atoms. These are neither created nor destroyed in a chemical reaction. (4) Matter consists of indivisible atoms

Match with correct: 1. Mass is neither created nor destroyed. (a) Liquid 2. Definite volume but no fixed shape. (b) atoms and molecules 3. Maximum inter-particle space. (c) Conservation of mass 4. All matter is made up of these. (d) Solid 5. Least kinetic energy. (e) Gas

Sublimation is a chemical change

State whether the given statement is true or false? Mass is created during a chemical change.

Rusting of iron is a chemical change.

Why energy is involved in a chemical change ?

Select the correct answer from the choice in bracket to complete each sentence. Matter is added or removed during a - [chemical/physical] change