*attention read this * if you do this assignment ill give u brainliest and 674 points! law of conservation of mass activity
purpose:
to show that matter is conserved during a chemical reaction.
background:
when a chemical reaction occurs, atoms are rearranged to form new compounds. matter is never created or destroyed; it is just rearranged to form different substances. this characteristic of matter is called the law of conservation of matter. when a chemical reaction occurs, the substances produced will have the same total mass as the original substances.
materials:
• baking soda
• vinegar
• measuring cup
• measuring spoons
• one latex balloon
• one paper or plastic disposable cup
• one clear (0.5 l) plastic water bottle or soda bottle (empty and clean)
• one marker
• one small funnel (optional)
procedures part i:
1. measure out 118 ml (1/2 cup) of vinegar and pour it into the disposable cup.
2. use the marker to draw a line on the cup even with the surface of the vinegar.
3. measure out one (1) tablespoon of baking soda.
4. add the baking soda to the vinegar slowly, making sure to not let the bubbles overflow the top of the cup. (if bubbles do overflow out of the cup, you will need to perform part i again.)
5. record your observations of the reaction, including any volume change (based on the line you drew on the cup), in the lab report.
procedures part ii:
1. use the (0.5 l) plastic bottle and balloon for this part of the procedure.
2. measure out 118 ml (1/2 cup) of vinegar and pour carefully into the bottle, using a funnel if you have one.
3. use the marker to draw a line on the bottle even with the surface of the vinegar.
4. measure out one (1) tablespoon of baking soda.
5. pour the baking soda carefully into the latex balloon.
6. put the opening of the balloon securely onto the mouth of the bottle, making sure to not spill any baking soda out of the balloon.
7. once the balloon has completely sealed the mouth of the bottle, shake the baking soda down into the vinegar. point the mouth of the bottle away from your face, just in case.
8. gently squeeze the bottle throughout the course of the reaction and record your observations.
9. record all of your observations of the reaction, including a comparison of the initial and final volume of liquid in the bottle.

directions: as you complete the conservation of mass activity, record your observations and answers on this lab report. be sure to save the file to be submitted as your assignment for this lesson.
observations: observe all aspects of the reactions carefully and record your observations in the table below.
observations
part 1 part ii

analysis and conclusion: answer the following questions with complete sentences.
1. if you could measure the mass of the substances inside the cup in part i before and after the reaction, you would see that the mass decreased over the course of the reaction. based on your observations in part i and ii, explain this difference in mass for the unsealed cup.

2. what caused the bubbles in the reaction? this was a chemical reaction. it’s a base and acid mixed together.

3. if you were to measure the mass before and after the reaction in part ii, you would see that mass was conserved. explain why the law of conservation of mass seemed to be obeyed in part ii but not in part i.
o bai the way once uve answered the qs i will post a fake q then u get the points out of it cause i dont want random pple getting points when they answer just to get points