____________ is used to determine which elements, ions, compounds, etc. are pres
ID: 1064300 • Letter: #
Question
____________ is used to determine which elements, ions, compounds, etc. are present in a sample. physical analysis forensic analysis qualitative analysis quantitative analysis which of the following statements is NOT correct? a. the first law of thermodynamics states that energy is always conserved b. A decrease in temperature is not a sign of a chemical change c. The atomic mass stated in the periodic table is an average of all isotopes of an element. d. Ionic charge is denoted by a negative sign after the superscript (N^2) while electronegativity is denoted a negative sign before the superscript (N^-1).Explanation / Answer
3. The determine the elements or ions in the sample is called qualitative analysis.
C. qualitative analysis
4. d
N2- and N-2 both are correct
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