What procedure could be used to demonstrate that matter is conserved during a chemical change?
One procedure that could be used to demonstrate the conservation of matter during a chemical change is the measurement of mass before and after the reaction.
Steps:
1. Set up a balance or a scale and calibrate it to ensure its accuracy.
2. Measure and record the mass of the reactants before the reaction.
3. Mix the reactants in a container and allow the reaction to occur.
4. After the reaction, measure and record the mass of the products.
5. Compare the mass of the reactants to the mass of the products.
6. If mass has remained constant or is within a close range of the initial mass, it can be concluded that matter is conserved during the chemical change. If there is a significant difference, it indicates that matter has not been conserved.
7. Repeat the experiment multiple times to ensure accuracy and reliability of the results.
One procedure that could be used to demonstrate the conservation of matter during a chemical change is by performing a mass measurement before and after the reaction. Here are the step-by-step instructions:
1. Set up a balance or a scale capable of measuring mass accurately.
2. Make sure the balance is properly calibrated and zeroed before starting the experiment.
3. Take a clean, dry container (such as a beaker) and accurately measure its mass using the balance. Record this mass as the initial mass.
4. Perform the chemical change by combining the reactants according to the desired reaction. Ensure that the reactants are mixed thoroughly to promote complete reaction.
5. Allow the reaction to proceed until completion, ensuring that no gas or solid products escape from the container.
6. Carefully transfer the contents of the reaction vessel into the same container that was used for the initial mass measurement.
7. After the reaction is complete, re-measure the mass of the container with the products using the same balance. Record this mass as the final mass.
8. Compare the initial mass and the final mass. If matter is conserved during the chemical change, the masses should be equal (or very close to equal) within the limits of experimental error.
By performing this procedure, you can demonstrate that matter is conserved during a chemical change by comparing the masses of the reactants before the reaction and the products after the reaction.
To demonstrate that matter is conserved during a chemical change, you can perform a simple experiment called a mass/matter balance. Here's how you can do it:
1. Gather the necessary materials: You will need a balance that can measure mass accurately, some chemicals that undergo a chemical change (e.g., baking soda and vinegar), and a container to capture the reaction products (e.g., a flask or beaker).
2. Set up the balance: Place the balance on a stable surface and make sure it is calibrated correctly.
3. Measure the mass of the reactants: Use the balance to measure the mass of the container. Then, add a known mass of one reactant (e.g., baking soda) to the container and measure its combined mass. Record these measurements.
4. Perform the chemical reaction: Add the other reactant (e.g., vinegar) to the container and allow the chemical reaction to occur.
5. Collect the reaction products: After the reaction has finished, measure the mass of the container with the reaction products.
6. Analyze the results: Compare the mass of the reactants (baking soda and vinegar) at the beginning to the mass of the container with the reaction products. Ideally, the mass should remain the same or be very close, indicating that matter is conserved during the chemical change.
By performing this experiment, you can directly observe that matter is conserved during a chemical reaction, which supports the principle of conservation of mass in chemistry.