electron has moved towards the nucleus. 6.4.1.2 Describing an In an atom the number of 0.5 What is ionisation? Use simple modelling atom in terms of electrons is equal to the techniques to show How can an atom be ionised? Pass My – protons, neutrons number of protons in the that the number of Radioactivity, Atomic and electrons. nucleus. Atoms have no Why do some elements have protons in an isotope Structure, Atomic overall electrical charge. of an element remains isotopes? How to represent Number and Atomic constant but the atoms. All atoms of a particular Mass Describe the composition of a number of neutrons element have the same given atom in terms of the changes. number of protons. The number of protons and number of protons in an Produce a table electrons. YouTube: atom of an element is called showing the mass Explain why atoms have no its atomic number. number, atomic overall electrical charge, as the number and number of The total number of protons number of protons and neutrons for an and neutrons in an atom is electrons is equal. element given in the called its mass number. form . Research how atoms can be Atoms of the same element ionised by making the number can have different numbers of protons different to the of neutrons. These atoms number of electrons in an atom. are called isotopes of that State that the number of protons element. in a given element is always the Atoms can be represented same, though the mass number as shown in this example: my change. Define the atomic number for an element. Calculate the number of neutrons for a stated element
electron has moved towards the nucleus. 6.4.1.2 Describing an atom in terms of protons, neutrons and electrons. How to represent atoms. In an atom the number of electrons is equal to the number of protons in the nucleus. Atoms have no overall electrical charge. All atoms of a particular element have the same number of protons. The number of protons in an atom of an element is called its atomic number. The total number of protons and neutrons in an atom is called its mass number. 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: 0.5 What is ionisation? How can an atom be ionised? Why do some elements have isotopes? Describe the composition of a given atom in terms of the number of protons and electrons. Explain why atoms have no overall electrical charge, as the number of protons and electrons is equal. Research how atoms can be ionised by making the number of protons different to the number of electrons in an atom. State that the number of protons in a given element is always the same, though the mass number my change. Define the atomic number for an element. Calculate the number of neutrons for a stated element Use simple modelling techniques to show that the number of protons in an isotope of an element remains constant but the number of neutrons changes. Produce a table showing the mass number, atomic number and number of neutrons for an element given in the form . Pass My – Radioactivity, Atomic Structure, Atomic Number and Atomic Mass YouTube:
AQA-8464-SOW-ATOM.DOCX