In Figure 1, the letters A, E, G, J, X and Z show the positions of six elements in the periodic table - Edexcel - GCSE Chemistry Combined Science - Question 1 - 2019 - Paper 1
Question 1
In Figure 1, the letters A, E, G, J, X and Z show the positions of six elements in the periodic table. These letters are not the symbols of the atoms of these elemen... show full transcript
Worked Solution & Example Answer:In Figure 1, the letters A, E, G, J, X and Z show the positions of six elements in the periodic table - Edexcel - GCSE Chemistry Combined Science - Question 1 - 2019 - Paper 1
Step 1
Using the letters A, E, J, X and Z (i) give the letters of the two elements that are non-metals
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Answer
The two non-metal elements are E and X. Non-metals are typically found on the right side of the periodic table, and in this case, E and X fit that criterion.
Step 2
Using the letters A, E, J, X and Z (ii) give the letters of two elements in period 2
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Answer
The two elements in period 2 are E and J. Period 2 of the periodic table includes elements from Li to Ne, and in this case, E and J represent these elements.
Step 3
Using the letters A, E, J, X and Z (iii) give the letter of an element that normally forms an ion with a charge of +1.
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Answer
The element that normally forms an ion with a charge of +1 is J. Typically, alkali metals have a +1 charge in ionic compounds.
Step 4
Explain, in terms of subatomic particles, what is meant by the term isotopes.
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Isotopes are variants of the same chemical element that have the same number of protons but a different number of neutrons. For example, Element E with atomic number 5 has isotopes with mass numbers 10 and 11. This means one isotope has 5 protons and 5 neutrons (mass number 10), while the other has 5 protons and 6 neutrons (mass number 11).
