chemical analysis

• Atomic number = proton number
• Mass number (A) - The total number of protons and neutrons present in the nucleus of an atom
• Atomic number (Z) - The number of protons present in the nucleus of an atom
• Mass spectrometry identifies compounds by determining their molecular mass-to-charge ratio.
• The atomic mass is the average relative mass of an atom, calculated by adding up the masses of all its protons, neutrons, and electrons.
• The atomic mass is the average relative mass of an atom, calculated by adding up the masses of all its protons, neutrons, and electrons.
• Gas chromatography separates mixtures by the differences in the retention times of the components as they flow through a column.
• Gas chromatography separates mixtures by the differences in the retention times of the components as they flow through a column.
• Atomic absorption spectroscopy is useful for determining the concentration of metals in samples.
• Atomic absorption spectroscopy is useful for determining the concentration of metals in samples.
• Atomic absorption spectroscopy determines the concentrations of metallic elements in solution based on the peak absorbance obtained at a specific wavelength for each element.
• Paper chromatography involves placing a small spot of an ink or other substance on filter paper, then dipping it into a solvent that will dissolve some but not all of the substances present.
• Isotopes are atoms with the same atomic number but different mass numbers.