Conservation of Mass — Definition & Importance
Read this topicExplanations 3
- The Law of Conservation of Mass, discovered by a French chemist named Antoine Lavoisier in 1789, states that in a chemical reaction, matter is NOT created nor destroyed. In a ch…
By Lydia Kim, Gnoh Cheng Yi, Moor Xu, Gabi Slizewska
- In chemical reactions, bonds between atoms are broken and reformed, but the actual atoms present stay the same. Atoms contain the mass in all matter, so the masses on each side …
By Adrien, Alex Federspiel, Gabi Slizewska
- (Video) GCSE Chemistry - Conservation of Mass #23 by Cognito This video will explain why mass remains constant throughout a chemical reaction. This is also why we need to balanc…
By Mario Janakis, Gabi Slizewska
Problems 13
- The total mass of the products of an exothermic reaction should be woah‾\underline{\phantom{woah}}woah the total mass of the reactants.
- When organic material is combusted, it leaves behind ash. The remaining ash always weighs less than the original material. How is this possible?
- In some reaction, the reactants are found to have a total mass of 23 AMU. What is the total mass of the products?
- You are trying to sprout a 5g seed by placing it in 20g of water. You leave it to grow for a few days, and then weigh the seedling and the remaining water. You find that the see…
- A reaction forms 5 grams of product. What was the mass of the reactants?
- Which reason provides the strongest support for the law of conservation of mass?
- Water has a density of 1g/mL. In order to create a liter of water, what combined mass of H and O do you need?
- Immediately after eating a huge Thanksgiving meal of about a pound of food, you step on a scale and see that you weigh more than you did before the meal. How much more should yo…
- 10 grams of reactants goes in to a reaction. 3 grams of reactants remains after the reaction. What is the mass of the product formed?
- Conservation of mass is rooted in what other conservation law?
- Methane is 75% carbon by mass. If we use 30 grams of carbon to produce methane, how many grams of methane do we make?
- When heavier elements are produced in a chemical reaction, where does that excess mass come from?
- Select all that apply. Both sides of a chemical reaction should contain the same woah‾\underline{\phantom{woah}}woah.