A Level Chemistry Question

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evaristegalois
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So I am starting, A Level Chemistry OCR Exam Board this year, and I was just wondering whether if they give you the ions (ve+&-) on the chemistry data sheet during the test.

e.g would they give Na+ on the sheet (I know this is an extremely basic one, and even a monkey would recognise, but it's an example).

Or would they expect you remember these ions, for the test (or maybe assume that you already know the pattern for the ions, such as on the s-block you would have positive ions, I think? e.g K+
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Solivagant
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I didn't do OCR, but for my exam board we certainly didn't get any of them. Tbh you shouldn't have to spend any extra time learning them, the common ones will become second nature.
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the traveller
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(Original post by evaristegalois)
So I am starting, A Level Chemistry OCR Exam Board this year, and I was just wondering whether if they give you the ions (ve+&-) on the chemistry data sheet during the test.

e.g would they give Na+ on the sheet (I know this is an extremely basic one, and even a monkey would recognise, but it's an example).

Or would they expect you remember these ions, for the test (or maybe assume that you already know the pattern for the ions, such as on the s-block you would have positive ions, I think? e.g K+
no but you would have to have to deduce what their charges are by looking at their group e.g group1 gives 1+ ions and group 2 gives 2+ ions whilst group 7 give 1- ions and group 6 gives 2-. as for other metals such as transition metals you would be given an oxidation number which you will learn about and you can use that easily to find out their charges
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lukemurp890
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(Original post by evaristegalois)
So I am starting, A Level Chemistry OCR Exam Board this year, and I was just wondering whether if they give you the ions (ve+&-) on the chemistry data sheet during the test.

e.g would they give Na+ on the sheet (I know this is an extremely basic one, and even a monkey would recognise, but it's an example).

Or would they expect you remember these ions, for the test (or maybe assume that you already know the pattern for the ions, such as on the s-block you would have positive ions, I think? e.g K+
No, there are a list of ions you need to know (they are specified in the OCR Chem textbook). E.g CO3-2, NH4+.

As the user before me said, you need to deduce any other ions. I.e. Fluorine is in group 7, so will gain an electron in certain reactions. Forming an F- ion.
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Gaiaphage
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As before, you don't get given them, you only get given this data sheet. However, by the time you sit A level chemistry every ion will be second nature to you and you should know every one you need instantly without any revision, just from having seen them so many times!
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