Directions: Read the following statements about chemical reactions. Put (✔) if the statement is correct and (x) if the statement is wrong. Write your answers on a separate sheet of paper. _____1. When a physical change occurs, there is no new substance formed. 2. Products are substances that are used up to form new substances in a chemical reaction. 3. The positive sign (+) is the symbol used to show combination of reactants or products. 4. Double Replacement Reaction is when one element replaces another element from a compound. The more active element takes the place of the lesDQs active element in a compound. 5. In a chemical reaction, the total mass of the reactants is equal to the total mass of the products.​