Ocr chemistry a level foundations flashcards

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carbon -12 th what is relative atomic mass the larger nunüber found above or below and atom on the periodic table. it tells us the number of protons & neutrons what is atomic number tells us the number of protons an element has What is the charge of zinc 2+ zn What is relatue atoryc mass. the weighted mean mass of an atom of an element relative to //12 of the mass of an atom of carbon -12 th what is the formulas of the following with charges nitrate NO 3 2+ Zinc Zn²+ carbonate Sulfare SO42- chloride ci Suver (1) Ag+ proton electron neutron charge +1 * what is the structure of an atom. the atom has a positive nucleus with protons and newtrons. it is surrounded by shells containing electrons. What is the relative charge and mass of pie and n O ammonium copper tilt A hydroxide OH- NH₂+ mass 1 1/1836 1 2+ CO3²- n M MF य YO Im tu) a what is the formulas of the following with charges nitrate NO 3 2+ Zinc Zn²+ carbonate Sulfare SO42- chloride ci Suver (1) Ag+ proton electron neutron charge +1 * what is the structure of an atom. the atom has a positive nucleus with protons and newtrons. it is surrounded by shells containing electrons. What is the relative charge and mass of pie and n O ammonium copper tilt A hydroxide OH- NH₂+ mass 1 1/1836 1 2+ CO3²- n M MF य YO Im tu) a how do you calculate relative atomic mass (mass x abundance) of the following element + each gwen element. 100 what is an isotope atoms of the same element with diferent masse number of neutrons. what is isotopic mass. the mass compared with 1/1/12 mass of carbon - 12 how is percentage abundance of an isotope found. using a mass spectrometer a different how do you calculate relative atomic mass (mass x abundance) of the following element + each gwen element. 100 what is an isotope atoms of the same element with diferent masse number of neutrons. what is isotopic mass. the mass compared with 1/1/12 mass of carbon - 12 how is percentage abundance of an isotope found. using a mass spectrometer a different what are roman numerals. 1=1 4= IV 7 = VII S: V 6= V1 2 = 11 3 = 111 1-7 ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ what are roman numerals. 1=1 4= IV 7 = VII S: V 6= V1 2 = 11 3 = 111 1-7 ▬▬▬▬▬▬▬▬▬▬▬▬▬▬▬ how do you calculate percent by mass. percent by mass = mass of element. X100 My of compound what is Stoichiometry in a boulanced equation, the balancing numbers give the ratio of the amounts what is the uniting reactant the reactant that is fully used up what is theoretical yield maximum possuble amount of product how do you calculate percent by mass. percent by mass = mass of element. X100 My of compound what is Stoichiometry in a boulanced equation, the balancing numbers give the ratio of the amounts what is the uniting reactant the reactant that is fully used up what is theoretical yield maximum possuble amount of product why is 100%. yield dufficult to achieve. -reaction may not go to completion. - Side reactions may have taken place -purification may lead to loss of some product what can be said about actual and theoretical yield actual yield is lower than theoretical qield What is the equation for percentage yield percentage yield = actual yield ×100 theoretical qield. What is atom econonly a meassure of how well atoms have been utuised why is 100%. yield dufficult to achieve. -reaction may not go to completion. - Side reactions may have taken place -purification may lead to loss of some product what can be said about actual and theoretical yield actual yield is lower than theoretical qield What is the equation for percentage yield percentage yield = actual yield ×100 theoretical qield. What is atom econonly a meassure of how well atoms have been utuised what is molecular formula the number of atoms of each element in a molecule What is empirical formula the sumplist whole nuwber ratio of atoms of each element in a compound What is the empirical formula important for substances that do not exist as molecuues what is meant by anhydrous containing no water molecuues what is molecular formula the number of atoms of each element in a molecule What is empirical formula the sumplist whole nuwber ratio of atoms of each element in a compound What is the empirical formula important for substances that do not exist as molecuues what is meant by anhydrous containing no water molecuues what is hydrated a crystalline compound containing water molecules what is watter of crystallisation. water molecules that are bonded into the crystalline Structure of a compound. how do you find the missing value of x in a hydrated sout eg CuSO4. X H ₂ O mass formula mass Moi mass/Mr ratio (= by smallest) CUSO4 H₂O what is hydrated a crystalline compound containing water molecules what is watter of crystallisation. water molecules that are bonded into the crystalline Structure of a compound. how do you find the missing value of x in a hydrated sout eg CuSO4. X H ₂ O mass formula mass Moi mass/Mr ratio (= by smallest) CUSO4 H₂O how do you coulculate number of mores usung aucgadro constant number of moles = number of particles : (6.02×10²3) What is amount of substance - quantity whose what is the mole What is mole- unit of amount of substance (mol) What is avogadros constant number of particles per mole (6.02×10²³) What is molar gas volume per mole gas vowne how do you coulculate number of mores usung aucgadro constant number of moles = number of particles : (6.02×10²3) What is amount of substance - quantity whose what is the mole What is mole- unit of amount of substance (mol) What is avogadros constant number of particles per mole (6.02×10²³) What is molar gas volume per mole gas vowne how many particles are in a mole 6.02 x 10's particles. 23 what is the mole also known as avogadros constant how do you coulculate number of moles number of moles = mass / molar mass what does molar mass do mojar mass links moles with mass for any chemical substance what does it give the mass in grams per mole of substance how many particles are in a mole 6.02 x 10's particles. 23 what is the mole also known as avogadros constant how do you coulculate number of moles number of moles = mass / molar mass what does molar mass do mojar mass links moles with mass for any chemical substance what does it give the mass in grams per mole of substance What can we say about reactions with high atom economy produce a large proportion of desued on few waste products. important for industry. what does atom econonly assume 100% yield What does improving atom economy do for industrial processes. more efficient. what is the equation for atom econonly Sum of molar masses of desured product xico- Sum of molar masses of all products. What can we say about reactions with high atom economy produce a large proportion of desued on few waste products. important for industry. what does atom econonly assume 100% yield What does improving atom economy do for industrial processes. more efficient. what is the equation for atom econonly Sum of molar masses of desured product xico- Sum of molar masses of all products. what is concentration of a solution. amount of solite, in moles dissowed in each idm ³ what is I mol am -3 contours i moi of solute dissolved in each idm³ of solution. what is the equation for concentration Concentration = moles volume what is concentration of a solution. amount of solite, in moles dissowed in each idm ³ what is I mol am -3 contours i moi of solute dissolved in each idm³ of solution. what is the equation for concentration Concentration = moles volume