Atoms are made from protons, neutrons and electrons - OCR Gateway - GCSE Chemistry Combined Science - Question 12 - 2022 - Paper 1
Question 12
Atoms are made from protons, neutrons and electrons.
(a) The table shows the relative mass and relative charge of a proton, neutron and electron.
Complete the tabl... show full transcript
Worked Solution & Example Answer:Atoms are made from protons, neutrons and electrons - OCR Gateway - GCSE Chemistry Combined Science - Question 12 - 2022 - Paper 1
Step 1
Complete the table.
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Answer
For the neutron, the relative mass is 1 and the relative charge is 0. For the electron, the relative mass is approximately 1/1836 compared to a proton, which is about 5.445×10−4 when expressed in the same order of magnitude as a proton.
Step 2
What is the relative mass of an electron compared to a proton?
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Answer
The correct choice is 5.445 × 10^−4 which represents the relative mass of an electron in comparison to a proton.
Step 3
Which two elements are in Group 1 of the Periodic Table?
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Answer
Elements = A and B.
Step 4
Which element is in Period 4 of the Periodic Table?
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Answer
Element = E.
Step 5
Which element has a mass number of 12?
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Answer
Element = C.
Step 6
Which two elements are isotopes?
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Answer
Elements = C and B.
Step 7
Which element forms an ion with a 2+ charge?
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Answer
Element = E.
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