OCR A-LEVEL CHEMISTRY MODULE 2
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1. ISOTOPES ATOMS OF THE SAME ELEMENT WITH DIFFERENT NUMBERS OF NEUTRONS
2. ATOMIC (PRO- NUMBER OF PROTONS IN THE NUCLEUS
TON) NUMBER
3. MASS (NUCLEON) NUMBER OF PARTICLES (PROTONS & NEUTRONS) IN THE NUCLEUS
NUMBER
4. ION A POSITIVELY OR NEGATIVELY CHARGED ATOM OR (COVALENTLY BONDED) GROUP
OF ATOMS
5. RELATIVE ISO- THE MASS OF AN ISOTOPE COMPARED WITH ON TWELTH OF THE MASS OF AN
TOPIC MASS ATOM OFCARBON 12
6. RELATIVE ATOM- THE WEIGHTED MEAN MASS OF AN ATOM OF AN ELEMENT COMPARED WITH ONE
IC MASS TWELTH OF THE MASS OF AN ATOM OF CARBON 12.
7. AMOUNT OF THE QUANTITY OF WHOSE UNIT IS THE MOLE. CHEMISTS USE 'AMOUNT OF
SUBSTANCE SUBSTANCE' AS A MEANS OF COUNTING ATOMS
8. AVOGADRO CON- THE NUMBER OF ATOMS PER MOLE OF THE CARBON 12 ISOTOPES (6.02x10^23
STANT (NA OR L) mol^-1)
9. MOLE THE AMOUNT OF ANY SUBSTANCE CONTAINING AS MANY PARTICLES AS THERE ARE
CARBON ATOMS IN EXACTLY 12g OF THE CARBON 12 ISOTOPE
10. MOLAR MASS THE MASS PER MOLE OF A SUBSTANCE. THE UNITS = g mol^-1
(Mr)
11. MOLECULE A SMALL GROUP OF ATOMS HELD TOGETHER BY COVALENT BONDS
12. MOLAR VOLUME THE VOLUME PER MOLE OF A GAS. UNITS = dm^3 mol^-1. AT ROOM TEMPERATURE
& PRESSURE, THE MOLAR VOLUME IS APPROXIMATELY 24.0 dm^3 mol^-1
13. THE AMOUNT OF SOLUTE (IN MOL) DISSOLVED PER 1dm^3 OF SOLUTION
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, OCR A-LEVEL CHEMISTRY MODULE 2
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CONCENTRA-
TION OF A
SOLUTION
14. STANDARD SO- A SOLUTION OF KNOWN CONCENTRATION. STANDARD SOLUTIONS ARE NORMALLY
LUTION USED IN TITRATIONS TO DETERMINE UNKNOWN INFORMATION ABOUT ANOTHER
SUBSTANCE.
15. SPECIES ANY TYPE OF PARTICLE THAT TAKES PLACE IN A CHEMICAL REACTION
16. STOCHIOMETRY THE MOLAR RELATIONSHIP BETWEEN THE RELATIVE QUANTITIES OF SUBSTANCES
TAKING PART IN A REACTION
17. HYDRATED REFERS TO A CRYSTALLINE COMPOUND CONTAINING WATER MOLECULES
18. ANHYDROUS REFERS TO A SUBSTANCE THAT CONTAINS NO WATER MOLECULES
19. WATER OF CRYS- REFERS TO WATER MOLECULE THAT FORM AN ESSENTIAL PART OF THE CRYS-
TALLISATION TALLINE STRUCTURE OF A COMPOUND
20. R.A.M (%MASS 1 + %MASS 2 + %MASS 3) / 100%
21. MOLES, n n = m/Mr
22. GAS MOLES, n n = V(dm3)/ 24 OR V(cm3)/24000
23. CONC & VOL n = c x V (in dm3)
MOLES, n
24. IDEAL GAS EQUA- pV = nRT (R=8.31 J K^-1 mol^-1)
TION
25. % YIELD 100 X (actual amount in mol of product)/(theoretical amount in mol of product)
26.
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1. ISOTOPES ATOMS OF THE SAME ELEMENT WITH DIFFERENT NUMBERS OF NEUTRONS
2. ATOMIC (PRO- NUMBER OF PROTONS IN THE NUCLEUS
TON) NUMBER
3. MASS (NUCLEON) NUMBER OF PARTICLES (PROTONS & NEUTRONS) IN THE NUCLEUS
NUMBER
4. ION A POSITIVELY OR NEGATIVELY CHARGED ATOM OR (COVALENTLY BONDED) GROUP
OF ATOMS
5. RELATIVE ISO- THE MASS OF AN ISOTOPE COMPARED WITH ON TWELTH OF THE MASS OF AN
TOPIC MASS ATOM OFCARBON 12
6. RELATIVE ATOM- THE WEIGHTED MEAN MASS OF AN ATOM OF AN ELEMENT COMPARED WITH ONE
IC MASS TWELTH OF THE MASS OF AN ATOM OF CARBON 12.
7. AMOUNT OF THE QUANTITY OF WHOSE UNIT IS THE MOLE. CHEMISTS USE 'AMOUNT OF
SUBSTANCE SUBSTANCE' AS A MEANS OF COUNTING ATOMS
8. AVOGADRO CON- THE NUMBER OF ATOMS PER MOLE OF THE CARBON 12 ISOTOPES (6.02x10^23
STANT (NA OR L) mol^-1)
9. MOLE THE AMOUNT OF ANY SUBSTANCE CONTAINING AS MANY PARTICLES AS THERE ARE
CARBON ATOMS IN EXACTLY 12g OF THE CARBON 12 ISOTOPE
10. MOLAR MASS THE MASS PER MOLE OF A SUBSTANCE. THE UNITS = g mol^-1
(Mr)
11. MOLECULE A SMALL GROUP OF ATOMS HELD TOGETHER BY COVALENT BONDS
12. MOLAR VOLUME THE VOLUME PER MOLE OF A GAS. UNITS = dm^3 mol^-1. AT ROOM TEMPERATURE
& PRESSURE, THE MOLAR VOLUME IS APPROXIMATELY 24.0 dm^3 mol^-1
13. THE AMOUNT OF SOLUTE (IN MOL) DISSOLVED PER 1dm^3 OF SOLUTION
1/6
, OCR A-LEVEL CHEMISTRY MODULE 2
Study online at https://quizlet.com/_2zn2ow
CONCENTRA-
TION OF A
SOLUTION
14. STANDARD SO- A SOLUTION OF KNOWN CONCENTRATION. STANDARD SOLUTIONS ARE NORMALLY
LUTION USED IN TITRATIONS TO DETERMINE UNKNOWN INFORMATION ABOUT ANOTHER
SUBSTANCE.
15. SPECIES ANY TYPE OF PARTICLE THAT TAKES PLACE IN A CHEMICAL REACTION
16. STOCHIOMETRY THE MOLAR RELATIONSHIP BETWEEN THE RELATIVE QUANTITIES OF SUBSTANCES
TAKING PART IN A REACTION
17. HYDRATED REFERS TO A CRYSTALLINE COMPOUND CONTAINING WATER MOLECULES
18. ANHYDROUS REFERS TO A SUBSTANCE THAT CONTAINS NO WATER MOLECULES
19. WATER OF CRYS- REFERS TO WATER MOLECULE THAT FORM AN ESSENTIAL PART OF THE CRYS-
TALLISATION TALLINE STRUCTURE OF A COMPOUND
20. R.A.M (%MASS 1 + %MASS 2 + %MASS 3) / 100%
21. MOLES, n n = m/Mr
22. GAS MOLES, n n = V(dm3)/ 24 OR V(cm3)/24000
23. CONC & VOL n = c x V (in dm3)
MOLES, n
24. IDEAL GAS EQUA- pV = nRT (R=8.31 J K^-1 mol^-1)
TION
25. % YIELD 100 X (actual amount in mol of product)/(theoretical amount in mol of product)
26.
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