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Question

An atom can be changed into an ion by adding or removing ___________
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An atom can be changed into a different isotope by adding or removing ___________
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Chapt 2

QuestionAnswer
An atom can be changed into an ion by adding or removing ___________ electrons
An atom can be changed into a different isotope by adding or removing ___________ neutrons
If you change the number of ________, the atom becomes a different element. protons
A nitrogen atom has 7 protons, and the most common isotope of nitrogen has 7 neutrons. A radioactive isotop of nitrogen has 9 neutrons. what are the atomic numbers and mass numbers of the stable and radioactive forms of nitrogen. Nitrogen- 14 has an atomic # of 7 and a mass # of 14. The radioactive isotope, nitrogen-16 has an atomic # of 7 and a mass # of 16.
Why are radioactive isotopes useful as traces in research on the chemistry? Organisms incorporate radioactive isotopes of an elemeent into their molecules just as they do the nonradioactive isotopes, and researchers can detect the presence of the radioactive isotopes.
A sulfur atom has 6 electrons in its third (outermost) shell, which can hold 8 electrons. As a result, it forms _______ covalent bonds with other atoms. (#) 2
What is chemically nonsensical about this structure? H-C=C-H
Why is it unlikely that two neighboring water molecules would be arranged like this?
Some people in your study group say they don't understand what a polar molecule is. you explain that a polar molecule...
Explain how unique properties of water result from the fact that water is a polar molecule
A can of cola consists mostly of sugar dissolved in water, with some carbon dioxide gas that makes it fizzy and makes the pH less than 7. Describe the cola using the following terms: solute, solvent, acidic, aqueous solution.
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