First ionisation Study guides, Revision notes & Summaries

Module 3 Model Questions And Answers State one benefit of adding chlorine to water (1) - Answer-Kills germs Suggest one possible hazard of adding chlorine to drinking water (1) - Answer-It is toxic Explain the decrease in the atomic radii across the period from Na to Cl (3) - Answer-1) nuclear charge increases 2) electron shielding remains the same 3) greater attraction to nucleus Describe and explain the trend, down the group, in the reactivity of the Group 2 elements with water (5) -...

AS CHEMISTRY Paper 1 Inorganic and Physical Chemistry Time allowed: 1 hour 30 minutes Materials For this paper you must have: • the Periodic Table/Data Sheet, provided as an insert (enclosed) • a ruler with millimetre measurements • a scientific calculator, which you are expected to use where appropriate. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer the questions in the ...

Chemistry OCR A Module 3 test bank 2024 periodic trends in electron configurations across periods 2 and 3 each period starts with an electron in a new subshell *however across period 3 the 4s subshell fills first identify the s-block, p-block and d-block in the periodic table What is the first ionisation energy? The energy required to remove one electron from each atom in 1 mole of gaseous atoms of an element to form 1 mole of gaseous 1+ ions. What is the equation for ...

Chemistry AQA AS EXAM 2024 QUESTIONS WITH 100% CORRECT ANSWERS Mass number - ANSWERS Total number of protons and neutrons. Atomic number - ANSWERS Numbers of protons in the nucleus and number of electrons in shells. Negative Ions - ANSWERS More electrons than protons. Positive ions - ANSWERS More protons than electrons. Relative isotopic mass - ANSWERS mass of an atom of an isotope of an element on a scale where an atom of carbon12 is 12. Relative atomic mass - ANSWERS average mass o...

2 Section A Answer all questions in this section. 0 1This question is about the elements in Period 3. 0 1 . 1 Give the full electron configuration of the element in Period 3 with the highest first ionisation energy. [1 mark] 0 1 . 2 Give an equation, including state symbols, to represent the process that occurs when the second ionisation energy of sodium is measured. [1 mark] 0 1 . 3 Table 1 shows some successive ionisation energies for an element in Period 3. Table 1 Ionisation nu...

Inorganic Chemistry: Periodicity Exam With 100% Correct Answers 2024 Which one of the following statements is correct? A The first ionisation energies of the elements in Period 3 show a general decrease from sodium to chlorine. B The electronegativities of Group 2 elements decrease from magnesium to barium. C The strength of the intermolecular forces increases from hydrogen fluoride to hydrogen chloride. D The ability of a halide ion to act as a reducing agent decreases from fluoride to...

AS CHEMISTRY Paper 1 Inorganic and Physical Chemistry Time allowed: 1 hour 30 minutes Materials For this paper you must have: • the Periodic Table/Data Sheet, provided as an insert (enclosed) • a ruler with millimetre measurements • a scientific calculator, which you are expected to use where appropriate. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer the questions in the ...

Periodic table Table that provides chemists with a structural organisation of the known chemical elements that can be used to deduce physical and chemical properties Atomic radius across Period 3 Decreases First ionisation energy across Period 3 Increases Exceptions: Drops at Al and S Melting points across Period 3 Increases from Na to Si Decreases from Si to Ar Small rise at S Explain why the melting point of aluminium is higher than the melting point of sodium Bigger charge (3+ comp...

AQA AS CHEMISTRY Paper 1 Inorganic and Physical Chemistry Tuesday 16 May 2023 Morning Time allowed: 1 hour 30 minutes Materials For this paper you must have: • the Periodic Table/Data Sheet, provided as an insert (enclosed) • a ruler with millimetre measurements • a scientific calculator, which you are expected to use where appropriate. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. ...

AS CHEMISTRY Paper 1 Inorganic and Physical Chemistry 0 1 This question is about the elements in Period 3. 0 1 . 1 Give the full electron configuration of the element in Period 3 with the highest first ionisation energy. [1 mark] 0 1 . 2 Give an equation, including state symbols, to represent the process that occurs when the second ionisation energy of sodium is measured 0 2 This question is about the elements in Group 2. 0 2 . 1 Describe the structure and bonding in magnesium. [2 ma...