GCSE Chemistry – Moles & Mass – Avogadro’s Constant | Formula for Moles, Mass & Mr (2026/27 exams)

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*** WHAT’S COVERED ***
1. The concept of the mole as a unit of measurement in chemistry.
* An explanation of Avogadro’s constant.
* The link between relative atomic/formula mass and the mass of one mole of a substance in grams.
2. The formula connecting moles, mass, and relative formula mass (Mr).
* How to calculate the number of moles in a sample.
* How to rearrange the formula to calculate the mass of a sample.
3. Applications of mole calculations.
* Calculating the mass of a particular element within a larger compound.
* Interpreting balanced chemical equations in terms of mole ratios.

*** EXAM BOARD SPECIFIC INFO ***
This video is suitable for:
– Higher tier only
– All exam boards
– Triple and combined science

*** CHAPTERS ***
0:00 Introduction
0:20 What is a Mole?
1:06 Avogadro’s Constant
2:03 The Mole Formula
2:40 Calculating Mass from Moles
3:05 Mass of an Element in a Compound
3:50 Moles in Balanced Equations

*** PLAYLISTS ***

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