Periodic table Flashcards
What are the typical properties of metals?
- Shiny
- conduct electricity
- dense
How reactive are noble gases?
Why?
Very unreactive because they have a full outer electron shell
Where are noble gases in the periodic table?
What are examples?
Group 0 on the right
Helium, Neon, Argon
Where are the metals in the period table?
Where are the non metals?
The metals are on the left and middle
Non metals are on the right
What is the name of the group 1 metals?
Describe their properties and reactivity.
They are called Alkali metals
They are more reactive as you go down the group
Group 1 have 1 electron in the outer shell
What do you think will happen if caesium was added to water?
It would react violently because it is very reactive with water.
it would produce a lot of hydrogen and cause an
explosion in the water
Complete these equations:
Lithium + water
Sodium + water
Potassium + water
Lithium hydroxide + hydrogen
Sodioum hydroxide + hydrogen
Potassim hydroxide + hydrogen
What are some uses of Noble gases?
Explain why they are used?
In ballons and airships - because they are less dense than air, so balloons filled with them float upwards
In advertising signs - because the glow when electricity passes through it
In light bulbs
in lasers
Complete the equations in these reactions:
Potassium bromide + Iodine
Sodium chloride + Iodine
Lithium iodide + bromine
Sodium iodide + Chlorine
What is the term given to some of these reactions?
Potassium bromide + iodine = UNCHANGED
Sodium chloride + brominde = UNCHANGED
Displacement reactions:
More reactive element displaces less reactive element in compound
Lithium iodide + bromine = Lithium bromide + iodine
Sodium iodide + chlorine = Sodium bromide + iodine
Draw an atom and label the subatomic structures.
Compare the patterns in reactivity of group 1 and group 7.
Group 1 reactivity increases as you go down the group
Group 7 reactivity decreases as you go down the group
Describe what is happening in this bar chart and estimate the melting point of potassium.
The melting point is descreasing as you go down the group.
Melting point of potassium: 62 degrees
