Chemistry As Level OCR Revision
Study online at https://quizlet.com/_grslro
1. Atomic Radius, Nuclear Charge, Electron Shield- What are the 3 things that affect
ing first ionisation energy?
2. Increase. More protons- stronger attraction. Not What is the general trend in ioni-
much extra shielding. sation energy across periods? And
why?
3. Decrease due to increased attraction between What is the trend in atomic radius
electrons and nucleus. across a period?
4. Increase due to metallic bonds getting stronger. What is the trend in boiling points
across metals?
5. Silicon. Strong covalent bonds. Which element in period 3 has the
highest melting point? And why?
6. Greater Van der Waals forces. What do more atoms in a molecule
mean for Van der Waals forces?
7. The noble gases. They are individual atoms. Which elements have the lowest
melting and boiling point? And
why?
8. Simple molecular structure. What bonding structure does
phosphorus have?
9. 2+ ions. What ions do Group 2 elements
form?
10. Increase. The lower the first and second ionisa- What is the trend in reactivity down
tion energies, the more reactive the element. Group 2? And why?
11. Decrease. (Increased atomic radius, and the What is the trend in ionisation en-
shielding effect) ergies down Group 2?
1/5
, Chemistry As Level OCR Revision
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12. Hydroxides. What do Group 2 elements pro-
duce when they react with water?
13. green, orange, brown What are the colours of the halo-
gens chlorine, bromine, and io-
dine? in order of question.
14. Decreases. What is the trend in reactivity of
halogens down the group?
15. Oxidising agents. They gain an electron in their Are halogens oxidising or reduc-
outer shell, so they are reduced. This means that ing agents? And why?
they oxidise other substances.
16. Add silver nitrate. Which test can be done to check
for halide ions?
17. Chlorine is white, Bromine is cream, Iodine is yel- What are the colours of the pre-
low. cipitates formed when chlorine,
bromine, or iodine is present in
the silver nitrate test?
18. Ag+(aq) + Cl-(aq)= AgCl(s) What is the ionic equation for the
silver nitrate test with Chlorine? In-
cluding state symbols?
19. 2NaOH(aq) + Cl2(aq)= NaClO(aq) + NaCl(aq) + What is the equation to produce
H20(l) bleach? Including state symbols?
20. It is 3+ (group 1), 2+ (group 2), 1+ (group 3), -1 How do you know what oxidation
(group 5), -2 (group 6), -3 (group7) number an element will be at the
start of the reaction?
2/5
Study online at https://quizlet.com/_grslro
1. Atomic Radius, Nuclear Charge, Electron Shield- What are the 3 things that affect
ing first ionisation energy?
2. Increase. More protons- stronger attraction. Not What is the general trend in ioni-
much extra shielding. sation energy across periods? And
why?
3. Decrease due to increased attraction between What is the trend in atomic radius
electrons and nucleus. across a period?
4. Increase due to metallic bonds getting stronger. What is the trend in boiling points
across metals?
5. Silicon. Strong covalent bonds. Which element in period 3 has the
highest melting point? And why?
6. Greater Van der Waals forces. What do more atoms in a molecule
mean for Van der Waals forces?
7. The noble gases. They are individual atoms. Which elements have the lowest
melting and boiling point? And
why?
8. Simple molecular structure. What bonding structure does
phosphorus have?
9. 2+ ions. What ions do Group 2 elements
form?
10. Increase. The lower the first and second ionisa- What is the trend in reactivity down
tion energies, the more reactive the element. Group 2? And why?
11. Decrease. (Increased atomic radius, and the What is the trend in ionisation en-
shielding effect) ergies down Group 2?
1/5
, Chemistry As Level OCR Revision
Study online at https://quizlet.com/_grslro
12. Hydroxides. What do Group 2 elements pro-
duce when they react with water?
13. green, orange, brown What are the colours of the halo-
gens chlorine, bromine, and io-
dine? in order of question.
14. Decreases. What is the trend in reactivity of
halogens down the group?
15. Oxidising agents. They gain an electron in their Are halogens oxidising or reduc-
outer shell, so they are reduced. This means that ing agents? And why?
they oxidise other substances.
16. Add silver nitrate. Which test can be done to check
for halide ions?
17. Chlorine is white, Bromine is cream, Iodine is yel- What are the colours of the pre-
low. cipitates formed when chlorine,
bromine, or iodine is present in
the silver nitrate test?
18. Ag+(aq) + Cl-(aq)= AgCl(s) What is the ionic equation for the
silver nitrate test with Chlorine? In-
cluding state symbols?
19. 2NaOH(aq) + Cl2(aq)= NaClO(aq) + NaCl(aq) + What is the equation to produce
H20(l) bleach? Including state symbols?
20. It is 3+ (group 1), 2+ (group 2), 1+ (group 3), -1 How do you know what oxidation
(group 5), -2 (group 6), -3 (group7) number an element will be at the
start of the reaction?
2/5
