Chemistry /Edexcel A Level Chemistry: Inorganic Chemistry and the Periodic Table Part 1

Edexcel A Level Chemistry: Inorganic Chemistry and the Periodic Table Part 1

Chemistry45 CardsCreated 10 days ago

This flashcard deck covers key concepts from the Edexcel A Level Chemistry syllabus, focusing on inorganic chemistry and the periodic table. It includes questions on ionisation energy, reactivity, reactions of group 2 elements, solubility trends, thermal stability, and flame tests.

How does ionisation energy change down group 2?

It decreases
Tap or swipe ↕ to flip
Swipe ←→Navigate
SSpeak
FFocus
1/45

Key Terms

Term
Definition
How does ionisation energy change down group 2?
It decreases
Why does ionisation energy decrease down Group 2?
The extra inner shells shield electrons. Nucleus is further away from outer electrons due to more shells
How does reactivity change down group 2?
Reactivity increases
Why does reactivity increase down group 2?
It becomes easier for the outer electrons to be lost, as they have lower ionisation energies
What do group 2 elements react with?
Water, oxygen and chlorine
What are the group 2 elements?
Beryllium, Magnesium, Calcium, Strontium, Barium (Radium)

Related Flashcard Decks

Study Tips

  • Press F to enter focus mode for distraction-free studying
  • Review cards regularly to improve retention
  • Try to recall the answer before flipping the card
  • Share this deck with friends to study together
TermDefinition
How does ionisation energy change down group 2?
It decreases
Why does ionisation energy decrease down Group 2?
The extra inner shells shield electrons. Nucleus is further away from outer electrons due to more shells
How does reactivity change down group 2?
Reactivity increases
Why does reactivity increase down group 2?
It becomes easier for the outer electrons to be lost, as they have lower ionisation energies
What do group 2 elements react with?
Water, oxygen and chlorine
What are the group 2 elements?
Beryllium, Magnesium, Calcium, Strontium, Barium (Radium)
What do group 2 elements produce when they react with water?
Hydroxides and hydrogen
Which group 2 elements react with water?
All except Be, Mg reacts very slowly
What do group 2 elements produce when they react with oxygen?
Oxides
What colour are group 2 oxides?
White
What do group 2 elements produce when they react with chlorine?
Chlorides
What colour are group 2 chlorides?
White
Oxides and hydroxides are…
…bases
What happens when group 2 oxides dissolve in water?
They form a strongly alkaline solution due to OH-
What happens when beryllium oxide is added to water?
It doesn’t dissolve, it is insoluble
What happens when magnesium oxide is added to water?
It reacts slowly and isn’t very soluble
When oxides and hydroxides are added to acid, what do they form?
They neutralise the acid to form salts
What is the equation for the reaction between MgO and H2O?
MgO + H2O —-> Mg(OH)2
What is the equation for the reaction between MgO and HCl?
MgO + 2HCl —-> MgCl2 + H2O
Solubility trends of group 2 depend on…
…the anion
If a group 2 compound has a singly charged anion (OH-) how does the solubility change down the group?
It increases
If a group 2 compound has a doubly charged anion (SO4 2-) how does the solubility change down the group?
It decreases
Which group 2 sulfate is insoluble?
Barium Sulfate
How does thermal stability change down group 1 and 2 carbonates and nitrates?
It increases
Why do carbonates and nitrates become more stable down the group?
Large ions have less polarising power so distort the electron cloud less and have a lower charge density. Therefore, they distort the carbonate or nitrate less
Which of group 1 and group two compounds are more thermally stable?
Group 1
Why are Group 1 compounds more stable than group 2?
They have a lower charge, so a lower charge density and therefore less polarising power
What do group 2 carbonates decompose to form?
An oxide and carbon dioxide
What is the equation for thermal decomposition of CaCO3?
CaCO3 ----> CaO + CO2
Do group 1 carbonates decompose?
No
What do group 1 nitrates decompose to form?
The Nitrite (NO2) and oxygen
What is the equation for decomposition of Potassium nitrate?
2KNO3 ----> 2KNO2 + O2
What is the exception to the group 1 nitrate decomposition?
Lithium
What does lithium nitrate decompose to form?
LiO2, NO2 and O2
What doe group 2 nitrates decompose to form?
The oxide, nitrogen dioxide and oxygen
What is the equation for the decomposition of Ca(NO3)2?
2Ca(NO3)2 ----> 2CaO + 4NO2 + O2

How can the thermal stability of nitrates be tested?

Measuring how long it takes for a certain amount of oxygen to be produced
OR
How long it takes for brown gas (NO2) to be produced

How can the thermal stability of carbonates be tested?
Measuring how long it takes for a certain amount of CO2 to be produced using lime water
What is the flame colour for Lithium?
Red
What is the flame colour for Sodium?
Orange/Yellow
What is the flame colour for Potassium?
Lilac
What is the flame colour for Rubidium?
Red
What is the flame colour for Caesium?
Blue
What is the flame colour for Calcium?
Brick red
What is the flame colour for Strontium?
Crimson