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This question is about lattice enthalpies. 0 1 . 1 FIGURE Explain why the second ionisation energy of calcium is lower than the second ionisation energy of potassium. [2 marks] 23 *23* 0 4 . 3 Identify the s-block metal that has

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2009618- QUESTIONSHEET 1 Calcium carbonate reacts with (c) Explain why the line on your graph does ..IGCSE CHEMISTRY RATES OF Genetics May Explain Why Calcium Increases Risk for Prostate 2011916-A study by epidemiologists at Wake Forest Baptist Medical Center and colleagues suggests that a high intake of calcium causes prostate cance

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(c) explain why this is an example of a displacement reaction. (d) give the ionic equation for the reaction between zinc and copper(II) sulphate solution and explain the reaction in terms of oxidation, reduction and electron transfer.

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Explain why sodium oxide has a IGCSE Chemistry: More on Electrolysis 2020-5-2 · So you can see that Na + and Cl - ions are not always discharged even though in all 3 of the above, the electrolytes contained these ions. For

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Explain why calcium metal after reacting with water starts … Calcium starts floating because the bubbles of hydrogen gas formed and stick to the surface of the metal. Ca + 2H 2 O → Ca(OH) 2 + H 2 Ironmaking 101 – From Ore

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Question paper 1 Level IGCSE(9-1) Subject Chemistry Exam Board Edexcel IGCSE Module Double Award (Paper 1C) Topic Inorganic Chemistry Sub-Topic Extraction and uses of metals Booklet Question paper 1 9 8 7 6 5 4 3

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igcse question explain why the metal calcium process Calcium oxide is a basic oxide because calcium is a metal of 2nd group and metal oxides are basic in nature because they form base. (e) Explain why aluminium oxide has a high melting point.

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Explain why calcium metal after reacting with water starts … Calcium starts floating because the bubbles of hydrogen gas formed stick to the surface of metal. Ca(s) +2H 2 O(l) →Ca(OH) 2 +H 2 (g) Magnesium reacts with hot water and starts floating due to the bubbles of …

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question or part question.* 5 9 7 8 5 9 4(e) Explain why the ray does not emerge into the metal-painted table-tennis ball as the gcse Question on The Extraction and Purifiion of Metals economically viable amounts of metal can be (1) Explain why aluminium can displace iron from Edexcel GCSE Science/IGCSE Chemistry OCR 21st

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IGCSE assessment is conducted by two UK assessmentOnline exam by sample question set prepared by Metals influence C-peptide hormone related to Producers Of New Show, Arrow, Explain Why …

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HELP - Explain why is sodium chloride NaCl BUT calcium Sodium is in group 1, Calcium is in group 2 and Ch… Yahoo! Answers Search Answers Search Web Sign In Mail Help Account Info H 2 Explain why the anion solutions

IGCSE Chemistry: Reactivity Series

2012/04/25· Metal + acid à metal salt + hydrogen. You can tell the metal''s position in the reactivity series by seeing how many bubbles are formed, or how fast. You can also: add a small piece of the metal to some cold water. If there is any rapid reaction, then the metal must be above magnesium in the reactivity series.

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Explain why calcium metal after reacting with water starts … Calcium starts floating because the bubbles of hydrogen gas formed stick to the surface of metal. Ca(s) +2H 2 O(l) →Ca(OH) 2 +H 2 (g) Magnesium reacts with hot water and starts floating due to the bubbles of …

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This question is about lattice enthalpies. 0 1 . 1 FIGURE Explain why the second ionisation energy of calcium is lower than the second ionisation energy of potassium. [2 marks] 23 *23* 0 4 . 3 Identify the s-block metal that has

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2009618- QUESTIONSHEET 1 Calcium carbonate reacts with (c) Explain why the line on your graph does ..IGCSE CHEMISTRY RATES OF Explain Like Im 5: Why Is Dairy Not the Best Source of 20141211-In the simplest terms, we need calcium but dairy isnt the best place to get it.

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