C2- Periodic Table Flashcards
How are the elements arranged in the Periodic Table?
The Elements in the Periodic Table are arranged into groups and periods.
Where are groups and periods on the periodic table?
Groups go down the periodic table.
Periods go across the Periodic Table
Why has the ordering of the periodic table changed over time?
1) New discoveries are being made and more theories are being developed.
2) New elements have been discovered
3) The weight of other elements have changed
What is the difference in structure between metals and non-metals?
Metals have a positive charge as well as ionic bonding whereas non metals have a negative charge.
How is electronic structure related to the periodic table? Give 2 points.
1) Elements which are in the same group have the same number of valence electrons
2) It gives them similar chemical properties which is why they are in the same group
What is a nickname for Group 1 Elements?
The Group 1 Elements are known as the Alkali Metals.
How many electrons do Group 1 Elements have in their valence shell?
All Group 1 Elements have 1 electron in their valence shell.
What is the trend as you go down group 1?
1) Reactivity is increased
2) Lower melting points and higher melting points
What type of COMPOUNDS do Alkali Metals form with Non-Metals?
Group 1 Elements form Ionic Compounds with Non-Metals
Give some features of Alkali Metals
1) Soft
2) Low density
What are ionic compounds like?
1) They are usually white solids
2) They usually dissolve in water
Do Group 1 Elements react with water?
1) Yes they do react with water
2) They all react in a similar way
How do Group 1 Elements react with water?
1) They react vigorously
2) They react to produce hydrogen gas and metal hydroxides
How reactive are the elements going down group 1?
1) The elements are more reactive.
2) This means they will react more vigorously
Do Group 1 Elements react with Chlorine?
Yes they do react with Chlorine
In what way do Group 1 Elements react with Chlorine?
1) They react vigorously when HEATED in chlorine gas.
2) They form metal chloride salts
Do Group 1 Elements react with Oxygen?
Yes they do react with Oxygen
What happens when Alkali Metals react with Oxygen?
1) They form Metal Oxides.
2) Different types of oxides form depending on the metal
What are Group 7 elements also known as?
Group 7 elements are also known as the Halogens.
Are the Halogens metals or non-metals?
The Halogens are non-metals, they have a negative charge.
What are the trends going down Group 7?
1) Elements become less reactive.
2) They have higher melting and boiling points
3) They have higher relative atomic masses
What type of compounds can Halogens produce?
Halogens can produce Molecular Compounds.
What type of bonds do Halogens form with metals?
They form Ionic Bonds with Metals
What type of ions do the Halogens form?
1) They form 1- ions with metals, known as halides.
What type of reaction can occur between a more reactive Halogen and the “salt”of a less reactive one?
A DISPLACEMENT reaction can occur
Do Halogens have a full shell?
1) No
2) They are 1 electron short of a full shell
