¿Cuál de los siguientes compuestos pertenecen a enlaces iónicos? *
CaO, NF3, H2O, SeO3, HCl
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List four observations that indicate that a chemical reaction may be taking place
Answers: 1
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The difference between the atomic number of an element and the element’s atomic mass is the number of ions.
Answers: 3
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Jose and eric were given four samples in lab. the results of their analysis are shown in the table. based on the data they collected, which sample is most likely a metal?
Answers: 1
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