Ch. 6 - Metals of Groups 1 and 2 Flashcards
What are five main properties of metals?
They are opaque and reflect light. They are malleable. They are ductile. They have a high boiling point. They conduct heat and electricity.
What structures do metals form?
Crystal lattices
What is a unit cell?
A repeating structure that creates a crystal lattice.
What are the two types of packing?
Cubic closest packing (ccp) and hexagonal closest packing (hcp).
What are the three types of cubic unit cells?
Face-centered cubic (fcc), body-centred cubic (bcc), and simple cubic.
How do we analyse crystalline solids (including metals)?
Using X-ray crystallography to create a diffraction pattern.
How are alkali metals usually stored? Why?
Under oil because they react with air.
Which ions do alkali metals form?
+1 cations
How many valence electrons do alkali metals have?
1
What role do alkali and alkaline earth metals play in redox reactions?
Reducing agent
Is a reaction with an alkali metal and water exothermic or endothermic?
Exothermic
What other group of elements to alkali metals react vigorously with?
Halogens
What is Coulomb’s law?
It is an equation used to calculate the electrostatic force of attraction when a cation meets and anion to create an ionic bond.
What is lattice energy?
The energy required to fully break an ionic lattice into gaseous ions.
Which property is true of all ionic compounds of alkali metals?
They are all soluble in water.
