Chemistry - Key Stage 4 - Whiteboard presentation - Multimedia lesson

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Atomic and molecular mass
Subject: Chemistry
Level: Key Stage 4
Resource type: Whiteboard presentation
Teaching type: Multimedia lesson

Description

At the end of this activity, students should be able to:
– quote the law of conservation of mass and explain it on the basis of the particularity of matter
– explain the terms: atomic mass and molecular mass
– read the atomic masses of elements from the periodic table
– calculate the molecular masses of chemical compounds
– obtain information about the quantitative composition of chemical compounds from their molecular formulae
– use the different ways of representing the composition of substances.

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Resources Structure Key Stage 4 Chemistry VI. Quantitative aspects of chemical reactions 30. Atomic and molecular mass Exam Specifications Key Stage 4 AQA GCSE Science A (4461) Chemistry I. Chemistry 1a – Products from Rocks 1. How do rocks provide building materials? No atoms are lost or made during a chemical reaction so the mass of the products equals the mass of the reactants and we can write balanced equations showing the atoms involved. AQA GCSE Additional Science (4463) Chemistry I. Chemistry 2 3. How much can we make and how much do we need to use? to calculate chemical quantities involving formula mass (Mr) and percentages of elements in compounds The relative atomic mass of an element (Ar) compares the mass of atoms of the element with the 12C isotope. It is an average value for the isotopes of the element. The relative formula mass (Mr) of a compound is the sum of the relative atomic masses of the atoms in the numbers shown in the formula. The relative formula mass of a substance, in grams, is known as one mole of that substance. The percentage of an element in a compound can be calculated from the relative mass of the element in the formula and the relative formula mass of the compound. AQA GCSE Chemistry (4421) I. Chemistry 1 10. How do rocks provide building materials? No atoms are lost or made during a chemical reaction so the mass of the products equals the mass of the reactants and we can write balanced equations showing the atoms involved. II. Chemistry 2 18. How much can we make and how much do we need to use? to calculate chemical quantities involving formula mass (Mr) and percentages of elements in compounds The relative atomic mass of an element (Ar) compares the mass of atoms of the element with the 12C isotope. It is an average value for the isotopes of the element. The relative formula mass (Mr) of a compound is the sum of the relative atomic masses of the atoms in the numbers shown in the formula. The relative formula mass of a substance, in grams, is known as one mole of that substance. The percentage of an element in a compound can be calculated from the relative mass of the element in the formula and the relative formula mass of the compound. The masses of reactants and products can be calculated from balanced symbol equations. 16. How do sub-atomic particles help us to understand the structure of substances? to write balanced chemical equations for reactions.

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YDP SA

Keywords
mass, atom, compound, molecular, atomic, relative, equation, calculation, atomic and molecular mass

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Atomic and molecular mass

Type: Whiteboard presentation

School licence till: 22/05/2013

Price: 5.00 GBP

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This resource belongs to the following Packs:

Chemistry – Key Stage 4

School licence till: 22/05/2013

Price: 349.00 GBP (excl. VAT)

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