C1-Atomic structure and the periodic table Flashcards
What is the pattern in group 1 elements
There is a increasing reactivity as you go down the group
– this is because As you go down the group the atoms get larger
– this means there are more shields between the nucleus and the electron
– this means that the greater number of Shields , Shield the strong electrostatic force of attraction between the nucleus and negative electrons
– this causes it to weaken and it can be lost more easily
I do group 1 metals usually react with
Oxygen
What happens when you react in a group 1 elements with water
Do you get Metal hydroxide plus hydrogen
The metal disappears to make a metal hydroxide which is an alkali
– bubbles are released which release hydrogen
– the metals get more reactive as you go down the group
What are the group 1 metals
That alkaline metals
I do group 7 elements get less reactive as you go down the group
As group 7 elements to send down the group, atoms get larger
– this means there are more shares between the nucleus and electrons it looks to gain
– This means that there are weaker forces of Electrostatic attraction
– which caused it to be harder to attract any electrons
What our group 7
Halogens
What are the halogens
Fluorine, chlorine, bromine, iodine, Astatine
How was the periodic table arranged in the 1800s
They were ordered in order of atomic mass
How did Mendeleev change the periodic table
He put elements mainly in order of atomic mass however he also judge them based on their properties – elements with similar properties in the same group
– gaps Were left to make sure the elements with similar properties stayed in the same groups – when they were found they fitted the pattern
What is distillation used for
Nation is used for separating out liquid from a solution
What did the groups tell you in the periodic table
The amount of electrons in the outer shell
What do columns tell you
Elements with similar properties e.g. the amount of shells
What are the different properties of metals and nonmetals
Metals–They are strong, but can be bent or hammered into different shapes (malleable)
-They conduct heat and electricity
– they have high boiling and melting points
Nonmetals – the more brittle, on the way solids at room temperature, don’t genuinely conduct electricity, they often have a lower density
What a group 0 elements
I will gases
– they are unreactive because the atoms have stable arrangement of electrons
– the boiling points increase going down each group
They are colourless gases at room temperature
– they are non-flammable
