students to come up with Atoms of the same element their own improved models. can have different numbers of neutrons; these atoms are WS 4.3, 4.4 called isotopes of that Ma 1b element. Atoms can be represented as shown in this example: 5.1.1.6 The relative atomic mass of Be able to calculate the 0.5 YouTube: an element is an average relative atomic mass of an value that takes account of element given the the abundance of the percentage abundance of isotopes of the element. its isotopes. 5.1.1.7 The electrons in an atom Be able to represent the 0.5 Relate the numbers of electrons YouTube: Make models of the electronic occupy the lowest available electronic structures of the to the numbers of protons. structure of various elements. energy levels (innermost first twenty elements of the available shells). periodic table in both forms. Draw the electronic structure of YouTube: Suspend from string and hang sodium. from ceiling in order of The electronic structure of an Students may answer Draw out the electronic structure numbers of electrons and atom can be represented by questions in terms of either of the atoms used in the electron shells. numbers or by a diagram. energy levels or shells. previous lesson. For example, the electronic Write out the numerical WS 1.2 structure of sodium electronic structure below the Ma 5b is 2,8,1 or shell diagram of each.
Atoms of the same element can have different numbers of neutrons; these atoms are called isotopes of that element. Atoms can be represented as shown in this example: students to come up with their own improved models. WS 4.3, 4.4 Ma 1b 5.1.1.6 The relative atomic mass of an element is an average value that takes account of the abundance of the isotopes of the element. Be able to calculate the relative atomic mass of an element given the percentage abundance of its isotopes. 0.5 YouTube: 5.1.1.7 The electrons in an atom occupy the lowest available energy levels (innermost available shells). The electronic structure of an atom can be represented by numbers or by a diagram. For example, the electronic structure of sodium is 2,8,1 or Be able to represent the electronic structures of the first twenty elements of the periodic table in both forms. Students may answer questions in terms of either energy levels or shells. 0.5 Relate the numbers of electrons to the numbers of protons. Draw the electronic structure of sodium. Draw out the electronic structure of the atoms used in the previous lesson. Write out the numerical electronic structure below the shell diagram of each. Make models of the electronic structure of various elements. Suspend from string and hang from ceiling in order of numbers of electrons and electron shells. WS 1.2 Ma 5b YouTube: YouTube:
AQA-8464F-SOW-ATOMIC.DOCX