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2 July, 23:59

Which of these substances are elements?

more than 1 answer

1. silicon

2. lead

3. silicone

4. water

5. iodine

6. quartz

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Answers (1)
  1. 3 July, 03:13
    0
    An element is a species of atom that has the same amounts of electrons and protons in their nuclei. To know which of these substances are elements, we can look it up in the periodic table of elements. The elements are as follows:

    1. silicon

    2. lead

    3. silicone

    5. iodine
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