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HESI A2 CHEMISTRY

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HESI A2 CHEMISTRY. What are all metric measurements composed of? Metric prefix and a basic unit of measure What is the most commonly used temperature scale in the scientific community? Celsius o... r Centigrade The nucleus of an atom contains or is made up of which of the following? Protons and neutrons What is an atom that has a positive charge called? A cation In the periodic table, what are the rows called? Periods What is the atomic number? Number of protons Which of the following describes the atomic mass? Average mass of that element's isotopes Chemical equations are written in which manner? Reactants -> Products What is the charge on potassium in the compound KCl? +1 A catalyst is a substance that accelerates a reaction by which of the following? Finding an alternate pathway for a reaction that requires less energy the following? Finding an alternate pathway for a reaction that requires less energy Percent concentration of a solution is expressed as which of the following? Parts per 100 parts What will one liter of a molar solution of any element contain? The atomic mass in grams of that element Chemical bonding is the bonding of which of the following? One atom to another atom Which of the following describes an ionic bond? It does not share electrons What is the concentrationof 58.5 g of NaCl in 2 L of solution (atomic weights of each elements are as follows: Na=23g/mol, Cl=35.5g/mol)? 0.5 mol NaCl In a redox reaction, which of the following describes reduction? It is the gain of electrons What are acids? Hydrogen donors [Show More]

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