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what are metaloids: metaloids are Boron,Silicon,Germanium,Arsenic, Antimony,Tellurium,Polonium,and Astatine

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Q: When does an ion change to a positive ion?

A: When an atom loses electrons and has more protons, resulting in a positive charge.

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Question #12 What Elements often form Positive ions?

Elements on the left side of the periodic are most likely to form positive ions.

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#7 carbon 14 is the most radioactive isotope

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#1 Q: What is an element? How many known elements are there?

A: An element is a pure substance made from atoms that all have the same number of protons. There are 118 elements recorded on the Periodic Table. :)

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table 2

An atom mass number can calculted by adding the number of protons and the number of neutrons

A

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Question 2:The number of protons is the same as the atomic number.

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#8 what is it used for?

Radioactive isotopes are used to detect and treat a variety of medical conditions.

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Question: what is an Isotope

Answer: an isotope is an atom of the same elememt that have different numbers of neutrons.

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protium, deuterium, tritium is the answer for question #9

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#3 Q:What are metalloids?

A: Metalloids are elements with properties like both metals and nonmetals.

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question 13: what are negative ions? answer: when an atom gains an electron, it forms an ion with a negative charge. question 14 provide example of negative ions. example: for example fluorine and chlorine can form ions with a -1 charge.

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Question 10: What is an ion?

Answer: An ion is an atom that is no longer neutral because it has gained or lost electrons. Ions form ionic compounds.

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Due Thursday after school