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 protons in an isotope Why do some elements have Structure, Atomic overall electrical charge. of an element remains isotopes? How to represent Number and Atomic constant but the All atoms of a particular Mass Describe the composition of a number of neutrons element have the same given atom in terms of the number changes. number of protons. The of protons and electrons. number of protons in an atom Produce a table YouTube: Explain why atoms have no of an element is called its showing the mass overall electrical charge, as the Past Exam Questions – atomic number. number, atomic number of protons and electrons Exampro ref: number and number of The number of protons is equal. 1. Q14W.IP1.03 neutrons for an and neutrons in an atom is 2. Q14S.2F.05 element given in the Research how atoms can be called its mass number. 3. Q12WY1H06 form . ionised by making the number of Atoms of the same element protons different to the number of can have different numbers electrons in an atom. Past Exam Questions – of neutrons. These atoms are Exampro ref: State that the number of protons called isotopes of that 1. Q13W.Y2F.02 in a given element is always the element. 2. QB03.F.6A same, though the mass number 3. QCJ97H8.09 can be represented as my change. shown in this example: Define the atomic number for an element. Calculate the number of neutrons for a stated element given the Atoms turn into positive ions number of protons and the mass if they lose one or more outer number. electron(s) Calculate the mass number for a particular element given the
6.4.1.2 Describing an atom in terms of protons, neutrons and electrons. How to represent 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 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. can be represented as shown in this example: Atoms turn into positive ions if they lose one or more outer electron(s) 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 given the number of protons and the mass number. Calculate the mass number for a particular element given the 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: Past Exam Questions – Exampro ref: 1. Q14W.IP1.03 2. Q14S.2F.05 3. Q12WY1H06 Past Exam Questions – Exampro ref: 1. Q13W.Y2F.02 2. QB03.F.6A 3. QCJ97H8.09