Chem v1/v2, AP V1/V2, HESI A2 Biology Questions And Answers Verified 100% Correct

Chem v1/v2, AP V1/V2, HESI A2 Biology Questions And Answers Verified 100% Correct How many electrons does an Oxygen ion have? - ANSWER 10 (Atomic # of 8 & is in group VIA which has a -2 charge, which means it has 2 more electrons than the 8 protons) What is the mass of 1 mole of CO2? - ANSWER 44g/mol (C 12.011 + (15.999 x 2) = ANSWER How many moles are present in 2 moles of O2? - ANSWER 4 (2 atoms in each molecule x 2 moles = 4 moles) What characterizes a chemical reaction as combustion? The chemical reaction that is the reaction of a compound with Oxygen? - ANSWER O2 is a reactant, CO2 and H2O are products Sum of oxidation # =? - ANSWER Charge on polyatomic ion Increasing the _________causes the particles to have greater kinetic energy, allowing them to move faster and have a greater chance? - ANSWER Temperature To balance an equation, what are placed in front of each component? - ANSWER Coefficient Dispersions forces are found in which covalent bond? - ANSWER Non-polar and polar The weakest of all intermolecular forces? - ANSWER Dispersion forces Dipole attraction is a __________intermolecular force? - ANSWER Weak What is created when an electron pair in a covalent bond is shared unequally? - ANSWER Dipole The attractions of one dipole to another is? - ANSWER Dipole interactions Strongest bond of intermolecular forces? - ANSWER Hydrogen bond. (This is not relating to covalent) Elements Flourine (F), Chlorine (CI ), Oxygen (O) and Nitrogen (N) are involved in which bond? - ANSWER Hyrdrogen bond Polarity is? - ANSWER Based on the difference in electronegativity values for the elements involved What reactions take p[lace in the nucleus to obtain stable nuclear configurations? - ANSWER Nuclear reactions Mass # - Atomic # = - ANSWER # Neutrons in a element Protons + Neutrons = - ANSWER Mass # # of Protons in a element - ANSWER Atomic # Neutral ions - ANSWER Neutrons - charge ions - ANSWER electrons + charge ions - ANSWER Protons Charge of noble gases? - ANSWER 0 Group IA - ANSWER +1 Charge Group IIA - ANSWER +2 Charge Group IIIA - ANSWER +3 Charge Group VA = - ANSWER -3 Charge Group VIA - ANSWER -2 Charge Group VIIA - ANSWER -1 Charge Rows on periodic table: - ANSWER Period (Horizontal Left/right) Columns of periodic table: - ANSWER Group (Vertiear upruown) Mass # - Atomic # = - ANSWER #Neutrons in a element # protons an element has: - ANSWER Atomic # How elements are arranged on the periodic table? - ANSWER By their chemical properties How elements are arranged on the periodic table? - ANSWER By their chemical properties Matter that has definite shape & volume? - ANSWER Solid Matter that changes in volume with changes in temperature & pressure? - ANSWER Gas Which change of matter is when no change is made to the chemical composition of a substance? - ANSWER Physical Simplest substance and is represented by a letter or letters? - ANSWER Element Law that states matter can neither be created nor destroyed during a chemical reaction? - ANSWER Law of conservation of mass Characteristic of viral herpes - ANSWER Skin eruption when a boxer gets hit and has a deviated septum - ANSWER vomer (in nose) Which of the following is a structure found in the upper respiratory? - ANSWER Pharynx A person who has damage to their ulnar nerve will have decreases sensation in - ANSWER . Arm Which bone dose not articulate with any other bone? - ANSWER Hyoid