Conservation of Atoms & Mass (High School Science)

⭐️ Check out our website https://www.cognito.org/ ⭐️ ** WHAT'S COVERED ** 1. The principle of conservation of atoms and mass in chemical reactions. How atoms are rearranged, not created or destroyed. Balancing chemical equations to conserve atoms. Demonstrating mass conservation using relative formula mass (Mr) and actual masses. 2. How to predict the products and balance the equations for chemical reactions. Using the chemical properties of elements to determine the likely products. Applying the principle of atom conservation to write a balanced symbol equation. 3. Why the mass measured in a reaction might appear to change. How a gaseous reactant from the air can cause an apparent increase in mass. How an escaping gaseous product can cause an apparent decrease in mass. The importance of using a sealed container to demonstrate true mass conservation. ** CHAPTERS ** 0:00 Introduction to Conservation of Atoms and Mass 0:28 The Principle of Conservation of Atoms and Mass 1:01 Conservation of Mass and Relative Formula Mass (Mr) 2:13 Predicting Chemical Reactions using Atom Conservation 2:38 Example: Reaction of Zinc and Hydrochloric Acid 3:23 Why Mass Can Appear to Change in Reactions 3:44 Example of Apparent Mass Increase: Burning Magnesium 4:38 Example of Apparent Mass Decrease: Decomposing Calcium Carbonate 5:03 Key Principles ** PLAYLISTS **    • Middle School Science (Life Science, Earth...      • High School Science   #ngss #Chemistry #study #revision #school #exam