C2.1 The Periodic Table Flashcards
What are the properties of metals?
-Conduct heat -Conduct electricity -Malleable (can be hammered into shape) -Lustrous (shiny) -Sonorous (make a ringing noise when hit) -High density
What are the properties of non-metals?
-Insulators of heat -Insulators of electricity -Brittle (break easily) -Dull -Low density
What is group 1 also known as?
The alkali metals
What is group 7 also known as?
The halogens
What is a displacement reaction?
When a more reactive element takes the place of a less reactive element
How does sodium react with water?
-Fizzes -Indicator changes from green to purple -Disappears -Floats -Moves on top of the water
Write a word equation for the reaction of sodium with oxygen
Sodium + Oxygen –> Sodium Oxide
Write a word equation for the reaction of sodium with water
Sodium + Water –> Sodium hydroxide + Hydrogen
Write a symbol equation for the reaction of sodium with oxygen
4Na(s) + O2(g) –> 2Na2O(s)
Write a symbol equation for the reaction of sodium with water
2Na(s) + 2H2O(l) –> 2NaOH(aq) + H2(g)
Why doesn’t bromine react with potassium chloride?
Because chlorine is more reactive than bromine so bromine can’t displace chlorine
Write a word equation for the reaction of iron with chlorine
Iron + Chlorine –> Iron Chloride
Describe the trend in reactivity in group 1
Group 1 get more reactive as you go down the group
Describe the trend in reactivity in group 7
The halogens get less reactive as you go down the group
Finish the following word equation
Potassium Bromine + Chlorine –>
Potassium Brominde + Chlorine –> Potassium Chloride + Bromine
Explain why universal indicator goes purple when sodium reacts with water
As sodium hydroxide is made which is an alkali
Describe the test for hydrogen
Set fire to it.
It makes a squeaky pop.
Finish the following symbol equation
2KI(aq) + Cl2(aq) –>
2KI(aq) + Cl2(aq) –> 2KCl(aq) + I2(aq)
