The number of protons Use the periodic table to Describe the relationship in an atom of an identify number of protons between number of positive element is its atomic in different elements. and negative charges. Apply number. All atoms of a this relationship to explain why particular element have there is no overall charge. the same number of protons. Atoms of Referring to their table of data different elements have students write their rules to different numbers of state what the atomic number protons. is and why elements are In an atom the number different from each other. of electrons is equal to Extended writing: the number of protons in the nucleus. Atoms have Describe the structure of no overall electrical atoms. charge. 4.1.2.4 The sum of the protons Relate differences between 0.5 WS 1.2 and neutrons in an atom isotopes to differences in Calculate numbers of is its mass number. conventional protons, neutrons and representations of their of the same electrons in atoms and identities, charges and element can have ions, given atomic masses. different numbers of number and mass neutrons; these atoms number of isotopes. are called isotopes of that element.
The number of protons in an atom of an element is its atomic number. All atoms of a particular element have the same number of protons. Atoms of different elements have different numbers of protons. In an atom the number of electrons is equal to the number of protons in the nucleus. Atoms have no overall electrical charge. Use the periodic table to identify number of protons in different elements. Describe the relationship between number of positive and negative charges. Apply this relationship to explain why there is no overall charge. Referring to their table of data students write their rules to state what the atomic number is and why elements are different from each other. Extended writing: Describe the structure of atoms. 4.1.2.4 The sum of the protons and neutrons in an atom is its mass number. of the same element can have different numbers of neutrons; these atoms are called isotopes of that element. Relate differences between isotopes to differences in conventional representations of their identities, charges and masses. 0.5 WS 1.2 Calculate numbers of protons, neutrons and electrons in atoms and ions, given atomic number and mass number of isotopes.
AQA-8465-SOW-BBLOCK.DOCX