1) What is proton number? a) The number of proton b) The number of proton in the nucleus of an atom 2) Which particles are found in the nuclues of an atom? a) Neutron b) Proton c) Electron d) Neutron and proton 3) What is nucleon number? a) The total number of neutron in the nucleus of an atom. b) The total number of proton in the nucleus c) The total sum of protons and neutrons found in the nucleus of an atom 4) Proton number is also known as : a) Atomic Number b) Mass Number c) Nucleon number 5) Nucleon number is known as: a) Atomic number b) Mass number c) Atomic nucleus 6) The nucleon number of Kr? a) 36 b) 48 c) 84 7) The number of neutrons of Kr? a) 36 b) 48 c) 84 8) Define molarity. a) The number of mole of dissolved solute divided by the volume of the mixture. b) The mass of dissolved solute divided by the volume of the mixture. 9) Molarity is also known as : a) Molality b) Amount concentration c) Molal concentration 10) Define molality a) The number of mole of dissolved solute divided by the mass(in g) of the solvent b) The number of mole of dissolved solute divided by the mass(in kg) of the solvent. 11) Molality also known as: a) Mole fraction b) Molal concentration c) Amount concentration 12) What is limiting reactant? a) Reactant which is entirely consumed b) Limits the amount of products that can be formed c) Product which is entirely consumed 13) What is excess reactant? a) Reactant which entirely consumed b) Reactants in quantities greater than necessary to react with the quantity of the limiting reactant. 14) What is the proton number? a) 27 b) 59 c) 88 15) What is the number of electrons? a) 27 b) 24 c) 59

Chemistry SK015 Chapter 1

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