Flashcards
(18 cards)
How does a catalyst increase the rate of a reaction
It provides an alternative reaction pathway that has a lower activation energy than the uncatalysed reaction
What is the radius of an atom
0.1 nanometres
What is the radius of a nucleus
1 x 10 to the minus 14
In the early 1800s what were the elements arranged by
Atomic mass
What group r transition metals
2 and 3
How do group 1 metals react with water
Vigorously to produce hydrogen gas and metal hydroxides
How do group 1 metals react with Chlorine
Vigourously when heated to form white metal chloride salts
How do group 1 metals react with oxygen
Forms a Metal oxide
What does what does it mean if group 8 elements are inert
Don’t need to give up or gain electrons
What is an element of a full outer shell also called
Stable electronic structure
What happens when metals form ions
They lose electrons to form positive ions
What happens when non-metals form ions
They gain electrons to form negative ions
Ionic compounds have high
Melting and boiling points and have a giant ionic lattice
What r giant covalent structures
Macromolecules and have strong covalent bonds and very high melting and boiling points
What are the main examples of giant covalent structures
Diamond, graphite and silicon dioxide
How many covalent bonds does each carbon atom form in graphene
Three and are arranged in hexagons
Limitation of using particle theory to describe the movement of particles
Particles are not solid spheres and doesn’t show forces between particles
What is the process where a gas turns into a liquid
Condensation
