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Infection and response
Organisation
Cell biology
Biological molecules
Homeostasis and response
Responding to change (a2 only)
Energy transfers (a2 only)
The control of gene expression (a-level only)
Substance exchange
Bioenergetics
Genetic information & variation
Inheritance, variation and evolution
Genetics & ecosystems (a2 only)
Ecology
Cells
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1f industrialisation and the people: britain, c1783-1885
1c the tudors: england, 1485-1603
Britain & the wider world: 1745 -1901
Inter-war germany
World war one
2n revolution and dictatorship: russia, 1917-1953
World war two & the holocaust
1l the quest for political stability: germany, 1871-1991
The cold war
2j america: a nation divided, c1845-1877
Medieval period: 1066 -1509
The fight for female suffrage
2m wars and welfare: britain in transition, 1906-1957
2d religious conflict and the church in england, c1529-c1570
Britain: 1509 -1745
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23/05/2023
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How to draw bonding group 2 has a 2+ charge because it loses 2 elections. ions H Li Na Mg 3 PR K Ca Sc Ti Rb Sr Y Zr Nb Cs Ba Hf Ra0 Rf Db Fr Be Drawing ions are 2- SO4 ✓ group I has a + Ac Th Pa U Np Pu Am Cm Bk charge because it loses I electron group 3 has a 3+ charge 5 really simple : NH + 4 A La Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu Fm Md No Lr B ZP 1: Find the chemical symbol on the periodic table 2 look at the group and determine the charge 3: Combine the two! Examples: Ag NO 3 TOS Al Si Ar Vis Vin " 12 Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te IXe Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn Ob Sg Bh Hs Mt Ds Rg Cn Nh Fl Mc Lv Ts Og F He Ne Group 0 has no charge because it has full outer Shells meaning that it is balanced and stable. group & could have a 4+ or at because it could lose or gain & electrons group 6 has a 2- charge because it gains 2 electons group 7 has a 2- charge because it gains 1 election group 5 has a 3- charge because it gains 3 elections Drawing ionic bonding • only in Tonic Bonding pealy happen with group) leg. Group other because they are strongly attracted...
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to each electrostatic attraction Can icnic band) Diagram: Na ** CI metal and a Drawing ionic compounds You use 'dot icnic compounds. Example: •The election is transgerred and leaves both of the elements with a full shell this leaves them stable. and cross diagrams for ४ Remember the to put the charge Don't forget the Square Brackets!