Task answers are provided and graded grade 6 and 8. Gcse science chemistry 91 calculating moles of a compound. Gcse chemistry revision worksheets on chemistry calculations and mole calculations can be accessed via. If youre behind a web filter, please make sure that the domains. Calculate the mass of aluminium formed when 51 g of aluminium oxide are electrolysed. Color printable periodic table pretty much everything you need that can fit on a page and still be readable. Doc browns chemistry ks4 science gcseigcsegceas o level revision. Chemistry notes form 3 chemistry form three pdf online. Aqa gcse 91 chemistry student book look inside by collins. Gcse science chemistry 91 relative formula mass duration. Chemistryscience chemistryscience revisiongcse sciencescience lessons.
The mass of one mole of a substance is sometimes referred to as the molar mass. Gcse chemistry revision chemical calculations mole. Because atomic masses, and the number of particles in a mole, are both based on the isotopic atomic mass of the isotope carbon12, the mass of any substance expressed in atomic mass units is numerically equal to the molar mass of the substance in grams per mole. Molar volume formula definition, formula and solved examples. This also works for ionic compounds, so a mole of sodium chloride nacl has a mass of 58. Moles, formulae and equations edexcel advanced gce in chemistry 9080 edexcel advanced gce in. The mass of 1 mol of molecules or formula units in grams is numerically equivalent to the mass of one molecule or formula unit in atomic mass units. Significant figures infographic this reference guide infographic provides a quick way. We learn how to use the relative formula mass to calculate the. Avogadros law textbook revision gcseigcseo level chemistry molar gas. Interpret balanced symbol equations in terms of mole ratios use balanced symbol equations to calculate reacting masses calculate the relative formula mass rfm for one substance when the rfms are given for all the other substances in. Learning molar mass is key to stoichiometry, empirical formulas, and more. You need to know the formula connecting moles, mass and formula mass and.
Color table with atomic numbers, element symbols, element names, atomic weights, periods, and groups. They also allow for introduction of the term molar mass as mass in g per mol. Learn how to calculate the formula mass of a compound by adding the mass values of its atoms with bbc bitesize gcse chemistry. Mole calculations formula mass and mole calculations gcse. This can be rearranged to find the mass if the number of moles and molar mass its relative formula mass in grams are known. Gcse science chemistry 91 calculating moles of an element. Includes a stepbystep guide, a graphic organizer, and a sample problem that. For example, a single molecule of o 2 has a mass of 32. The molar volume is directly proportional to molar mass and inversely proportional to density. The standard temperature used is 273 kelvin or 0 o c, standard pressure is 1 atmosphere, i. In this video, we continue looking at the idea of moles. Gcse science chemistry 91 reacting masses 1 youtube. Chemical calculations and moles gcse chemistry equations, formulae and calculations are often the part of the syllabus that many students struggle with.
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