intoduction to chemistry 4.0 / 5 based on 1 rating ? Chemistrylecture UniversityNone Created by: A'Myra.101Created on: 14-02-18 15:45 What are Isotopes? Different Weight Same properties 1 of 32 Which carbon Isotope is most abundent ? C12 , C13 ,C14 2 of 32 What is Ionic Bonding ? complate trasfer of valence elctrons between atoms 3 of 32 what is covalent bonding where valence elctrons are shared across a bond 4 of 32 what does the nuclei of an atom consist of ? protons and Neutrons 5 of 32 What do isotpes contain ? different number of neutrons, therefore have a different mass 6 of 32 where and what is the mass number on top ,the total number of protons and neutrons 7 of 32 what is the atomic number? number of protons = number of electrons 8 of 32 how can the number of neutrons be calculated by mass - atomic number 9 of 32 what is ionization energy ? the amount of energy required to move loosley bound electron on outer shell 10 of 32 what is eletron affinity amount of energy released or spent when elctron is added to neutral atom 11 of 32 what happens when the atomic radius increases the atom doesnt feel the pull because electrons are spread out 12 of 32 what happens when the attraction falls of with distance an electron close to the nucleous willl be much more srongly attracted than one further away 13 of 32 what happens in ionic bonding loss/gain of an electron by eletrostatic attrction 14 of 32 what happens in covalent bonding sharing of lectrons to form a complete octect 15 of 32 what is a mole the amount of substance of a system which contains as mamy elementry entities as there are atoms 16 of 32 what is avogrados constant number 6.023 times 10 to the 23 17 of 32 how can you work out number of molecules by avagrados constant number 18 of 32 how do you caluclate the number of moles in any given mass if you know the molecular formular mass (g) *molecular mass (mr) =number of moles 19 of 32 how many moles are in 5.436g of phenol (c6h6o) 94.113g/mol 20 of 32 what can we determine if we know the number of moles we can determine the molarity 21 of 32 what is the molarity if 0.51 moles of compound is dissolved in 500ml this gives us 1.02 moles per 1000ml or 1l 22 of 32 what is a mole amount of substance of a system which contains as many moleules of atoms as there are in 12g of carbon 23 of 32 what is avagrados costant number 6.023 x 10^23 24 of 32 how can we determine the number of moles in any given mass if we know the (MR) of a compound mass of chemical (g) / molecular mass (mr) = number of moles 25 of 32 149mg of asprin (Mr 180) is dissolved in 50mL water what is the concentration in mg/mL 2.98mg/mL 26 of 32 149mg of asprin (Mr 180) is dissolved in 50mL water what is the concentration in %w/v 0.298%w/v 27 of 32 149mg of asprin (Mr 180) is dissolved in 50mL water what is the concentration in ppm 2980ppm 28 of 32 149mg of asprin (Mr 180) is dissolved in 50mL water what is the concentration in mol/L (M) 0.0165moles/L (M) 29 of 32 what does stochiometry tell us the relative ratios of reactants and products in a reaction 30 of 32 how many valance electrons does carbon have 4 31 of 32 how many bonds can carbon form 4 32 of 32
Comments
No comments have yet been made