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WorksheetsGroup 17: Halogens
Total questions: 15
Worksheet time: 12mins
name one Group 17 element
chloride
bromine
oxygen
argon
draw an iodide dot-and-cross diagram
reactivity of halogens (a) down Group 17
what colour is iodine solid?
pale yellow
lilac-purple
grey
black-brown
what is the equation for the reaction between chlorine and hydrogen?
H2 + Cl2 → 2HCl
H + Cl → HCl
H2 + 2Cl → 2HCl
2H2 + 2Cl2 → 2HCl2
the bond enthalpy of halogen molecules decrease down Group 17 due to an increase in...
(a)
when nitric acid and silver nitrate are mixed with a bromide ion solution, what is the product formed
no precipitate
cream precipitate
yellow precipitate
white precipitate
a type of redox reaction in which a species is simultaneously oxidised and reduced.
equilibrium
combustion
redoxation
disproportionation reaction
why is chlorine called chlorine? (made this question especially for Julian and Mathias)
when chlorine was recognised as an element, it was named after the greek word for the colour green
because it's a natural element and nature is green
because chloro is the greek word for colour, which represents the range of colour that halogens displau
after realising that it had similar properties to Br and I, scientists decided to base the name off the greek word for stench
chlorine has practical uses in?
water purification
toilet cleaning
sanitation
vitamin supplement
halogens undergoes (a) to become an ion
atoms get larger down Group 17 so (a) decreases
H2SO4(l)+NaCl(s)→HCl(g)+NaHSO4(s) is an equation formed with halide ions, what is one observation that can be seen in this reaction?
white fumes
effervescence
white precipitate
brick-red precipitate
Which of the "Halogens" is found in liquid state at room temperature?
Flourine
Chlorine
Iodine
Bromine
Which four numbers a, b, c and d are required to balance the equation?
a Cl2(aq) + b KI(aq) ==> c KCl(aq) + d I2(aq)
2 1 1 2
1 2 2 1
2 1 2 1
1 2 1 2
