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A-level Chemistry
Elements of life
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Cards (124)
Hydrogen
carbonate
ion
HCO3-1
Ammonia ion
NH4
+
1
Hydroxide
ion
OH-1
Lead (II) Ion
Pb+2
Strontium ion
Sr2+
Aluminium ion
Al3+
Copper (II)
Cu2+
Nickel (II)
Ni2+
Tin(II)
Sn2+
Decomposition of metal carbonate
Metal oxide
+
carbon dioxide
Oxide ion
O2-
Specific heat capacity
Energy =
mass
x Specific heat capacity x
temperature
Acid + Hydroxide
Salt
+ water
Metal + acid
Salt +
hydrogen
Metal + water
Metal
hydroxide
+
hydrogen
Oxide + acid
Salt
+
water
Nitrate ion
N3-
Acid + carbonate
Salt + water +
carbon dioxide
Carbonate ion
CO32-
Sulfate ion
SO42-
Hydrogen
sulfate
ion
HSO42-
Phosphate ion
PO43-
Silver ion
Ag
+
Sulfate ion
S2-
Zinc ion
Zn
2+
Why are absorption spectra unique for each element?
Electrons move at unique
energy levels
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What does the equation energy equals frequency times wavelength represent?
It relates energy to
light
properties
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What is metallic bonding?
Outer electrons
merge to form a
lattice
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What factors affect the strength of metallic bonding?
Charge and size of the
ions
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Why do metallic bonds have high melting points?
Due to strong
electrostatic forces
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What causes ionic bonding?
Transfer of
electrons
between
metal
and
non-metal
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Why do ionic compounds have high melting points?
Strong
electrostatic forces
between ions
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When can ionic compounds conduct electricity?
In
aqueous
state, not fixed state
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What is covalent bonding?
Sharing of
electrons
between
non-metal
ions
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Why do covalent compounds have low melting points?
Weak
intermolecular forces
between molecules
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Do covalent compounds conduct electricity?
No, they have no
free electrons
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What is the flame ion color of lithium?
Bright
red
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What is the flame ion color of sodium?
Yellow
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What is the flame ion color of potassium?
Lilac
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What is the flame ion color of calcium?
Brick red
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