explain the law of conservation of mass with an experiment
Answers
Answer:
The law of conservation of mass states that in a closed system, the mass of the system cannot change over time. Look at our example of the candle in the closed room. ... If you massed the reactants oxygen and wax, it would equal the mass of the products water and carbon dioxide.
Answer:
Law of conservation of mass: It states that mass can neither be created nor destroyed in a chemical reaction. During any change, physical or chemical, matter is neither created nor destroyed. However it may change from one form to another.
Experiment
Procedure
1. Label the four graduated cylinders (or 2 oz cups) to contain the solutions (one each for NaOH, CuSO4, NH3 (aq), and Na2CO3).
2. Use a graduated cylinder to measure about 60 mL (2 oz) of the NaOH solution. Use a second graduated cylinder to measure about 60 mL (2 oz) of the CuSO4 solution and pour it into a 150-mL beaker (or 5 oz cup).
3. Carefully place the two solutions (in their containers) on the balance. Weigh the solutions and their containers together and record their combined weight.
4. Pour the NaOH solution into the container with the CuSO4 solution. Allow the solutions to mix. Describe what happens.
5. Weigh both containers and the mixture again. Record the new weight.
Did the weight change?
6. Repeat the process in steps # 2 and #3 above, first substituting NH3 (aq.) for the NaOH solution, then substituting Na2CO3 for the NaOH solution. In each case measure and record the masses as described in steps #3 and #5 above.