AQA GCSE chapter 02 Groups in Periodic Table
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on it to display the answer.
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| State 4 observations when you place an alkali metal in water | the fantastic 4"f": Float on water, fizz, flame and gets fmaller
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| What are the product of reaction between Sodium and water? | Sodium Hydroxide and Hydrogen gas
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| Write the word equation for the reaction of Lithium and water | Lithium + Water --> Lithium Hydroxide + Hydrogen; LEARN PATTERN
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| Write the formula of potassium hydroxide | KOH
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| What is the formula of Hydrogen gas? | H2
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| Write the symbolic equation for the reaction of potassium and Water | 2 K + 2 H2O --> 2 KOH + H2; learn the pattern (metal+water--> hydrogen + metal hydroxide); CHECK FORMULAE; this is not an easy equation to balance so maybe learn it altogether?
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| Which alkali metal is the most reactive? Li, Na or K | K
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| CHALLENGE Explain the pattern of reactivity in the Alkali metals | As you go down the group, there are more shells, the single electron on the outer shell is further away from the nucleus, less attracted to the nucleus, so less ENERGY is needed to remove the electron, so the metals become more reactive
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| What are the names of the Halogens as you go down the group? | Fluorine, Chlorine, Bromine, Astatine
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| What is the formula of Chlorine? | Cl2
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| What is the formula of Sodium Bromide? | NaBr
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| What are the products of reaction between Chlorine and Sodium Bromide | Bromine and Sodium Chloride
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| What is the pattern of reactivity as you go down the group? | As you go down the group, the Halogens become less reactive
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| Which Halogen is the most reactive? Chlorine, Iodine or Bromine? | Chlorine
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| Write the symbolic equation for the reaction between Chlorine and Sodium Bromide | Cl2 + 2 NaBr ---> Br2 + 2 NaCl
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| What is the product of the reaction between Hydrogen and Chlorine? | Hydrogen Chloride
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| What is the pH of Hydrogen Bromide solution? | below 7 (an acid)
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| Write the symbolic equation for the reaction between Chlorine and Hydrogen | Cl2 + H2 --> 2 HCl
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| What is the colour and state of Chlorine? | Green gas
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| What is the colour and state of Bromine? | Brown liquid
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| What is the colour and state of Iodine? | Grey solid
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| What colours are the vapours of Iodine? | Purple
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| What is the product of the reaction between Iron and Chlorine? | Iron Chloride
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| What is the colour and state of Fluorine? | Pale yellow gas
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| Colour of Chlorine SOLUTION | Pale green
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| Colour of Bromine SOLUTION | Orange-Brown
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| Colour of Iodine SOLUTION | Brown
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| Colour of Sodium Iodide SOLUTION | Colourless
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| Chlorine + Sodium Bromide --> Sodium Chloride + Bromine; what colour change would you expect? | Chlorine + Sodium Bromide --> Sodium Chloride + Bromine; you would see the colour changing from pale green (Chlorine) to brown (Bromine)
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| Word equation for the reaction of Bromine and Sodium Chloride; what colour change would you expect? | There would be no reaction because Bromine is less reactive than Chlorine so the Chlorine would not let Bromine take the Sodium! No colour change!
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| Formula of Iodine? | I2
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| Formula of Sodium Chloride? | NaCl
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| Formula of Iron(III)Chloride? | FeCl3
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| What is the word equation for the reaction between Chlorine and Sodium Bromide? | Chlorine + Sodium Bromide --> Sodium Chloride + Bromine;
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| What is the word equation for the reaction between Chlorine and Sodium Iodide? | Chlorine + Sodium Iodide--> Sodium Chloride + Iodine;
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| What is the word equation for the reaction between Bromine and Sodium Iodide? | Bromine+ Sodium Iodide--> Sodium Bromide+ Iodine;
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| How many electrons on the outer shell do the elements in group 7 have on the outer shell? | 7 electron in the outer shell
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| How many electrons on the outer shell do the elements in group 1 have on the outer shell? | 1 electron in the outer shell
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| An element has an electron configuration of 2,8,1. Which group is it in? Explain why you said this. | Group 1 because 1 electron in the outer shell
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| An element has an electron configuration of 2,8,7. Which group is it in? Explain why you said this. | Group 7 because 7 electron in the outer shell
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