A. non-metal elements composed of diatomic molecules
B. non-metal elements composed of individual atoms
C. metal elements composed of diatomic molecules
D. metal elements composed of individual atoms
2. Elements in Group 7 have similar chemical reactions because they have the same number of ...
A. electron shells
B. electrons
C. outer shell electrons
D. protons
3. The order of reactivity of the Halogens from most to least reactive is:
A. Fluorine, Chlorine, Bromine, Iodine
B. Iodine, Bromine, Chlorine, Fluorine
C. Chlorine, Bromine, Iodine, Fluorine
D. Bromine, Iodine, Fluorine, Chlorine
4+5. Predict the colour and the state of astatine given the following information:
Halogen
Colour
Physical State at room temperature
Fluorine
yellow
gas
Chlorine
green
gas
Bromine
red-brown
liquid
Iodine
grey
solid
Astatine
6. Information on the melting and boiling points of some of the group 7 elements is given below.
Use the information to predict a value for the boiling point of iodine.
Halogen
Melting Point in OC
Boiling Point in OC
Fluorine
-220
-188
Chlorine
-101
-35
Bromine
-7
59
Iodine
114
7. Which one of the following reactions will take place?
A. bromine + potassium iodide → potassium bromide and iodine
B. bromine + potassium chloride → potassium bromide and chlorine
C. iodine + potassium chloride → potassium iodide and chlorine
D. iodine + potassium bromide → potassium iodide and bromine
Q8-10. Chlorine gas is bubbled into sodium bromide solution.
The sodium bromide solution changes color indicating a reaction.
8. The reaction between chlorine and sodium bromide is a ...
A. combustion reaction
B. neutralization reaction
C. substitution reaction
D. displacement reaction
9. This reaction occurs because ...
A. chlorine is more reactive than sodium bromide
B. chlorine is less reactive than sodium bromide
C. chlorine is more reactive than bromine
D. chlorine is less reactive than bromine
10. The chemical equation for this reaction is ...
