WorksheetsThe Halogens
Total questions: 18
Worksheet time: 36mins
What does the term 'halogen' mean?
acid former
alkali former
salt former
non-metal former
Which statement is true about the Group 7 Halogens?
they exist as single atoms at room temperature
they are poor conductors of electricity
only the first one is a gas at room temperature and pressure
they have high boiling points
Which following is true about the trend down the Group 7 with an increase in atomic number?
the atoms get larger
the boiling points decrease
the reactivity increases
the colour of the element gets lighter
Which halogen is the most reactive?
chlorine
bromine
astatine
iodine
Which correctly describes a property of the compound formed when a halogen X (eg Cl, Br, I) combines with an Alkali Metal M (eg Li, Na, K etc.)?
silvery solid
low melting point
the solid is a poor conductor
will not conduct heat when liquid or dissolved in water
Which is used to kill bacteria in the water?
silver bromide
sodium hydroxide
chlorine
hydrochloric acid
Which of the halogens is found in a liquid state at room temperature?
fluorine
astatine
bromine
iodine
Halogens react with hydrogen to form _____
salt
gas
metal halide
hydrogen halide
All halogens are extremely poisonous, they need to be handled in a ___________
fume cupboard
class laboratory
field
closed room
Which of these are the characteristics of hydrogen halides?
acidic
alkaline
poisonous gas
ionic bond
covalently bond
Metal halides are the product of halogen's reaction with ______
alkali metal
noble gas
transition metals
non-metal
What happens in displacement reaction?
the more reactive element will displace the less reactive element
the less reactive element will displace the more reactive element
Complete the following equation:
____ + ____ → 2HBr
H, Br
H2, Br
H, Br2
H2, Br2
How do we know a displacement reaction has occured?
there will be colour change
there will be a change in the element's state
when a gas is formed
Which equation shows the displacement of bromine by chlorine?
2NaBr + Cl2 → 2NaCl + Br-
NaBr + Cl- → NaCl + Br2
2NaBr + Cl2 → 2NaCl + Br2
NaBr + 2Cl- → NaCl + 2Br-
What can be observe when bromine water is added into potassium iodide solution?
Yellow solution formed
Purple solution formed
Brown solution formed
Colourless solution formed
In displacement reaction, the metal ions does not do anything. That's why they are called ______
spectator ion
watcher ion
idle ion
non important
In which of the followings, displacement reactions does not occurs?
Potassium bromide solution with chlorine water
Potassium chloride with bromine water
Potassium iodide solution with bromine water
Potassium iodide solution with chlorine water
