Revision For Test Wednesday 8th March 2023 Flashcards
What is a single layer of graphite called?
Graphene
Why is the structure of a diamond so strong?
Because it has many covalent bonds
Why can some structures conduct electricity?
Because it has delocalised electrons that can pass between layers. The electrons can carry the charge.
How many millimetres in 1 m
1000 mm
How many metres in 1 mm
0.001 m
Explain the differences between silicon dioxide and diamond
Silicon dioxide contains silicon and oxygen atoms instead of carbon has a similar structure to diamond
Name the three types of chemical bonding
ionic, covalent, metallic
Which four groups are more likely to make ions
One, two, six and seven
In metals are all atoms the same?
Yes, in metals, all atoms are the same
What is a monomer?
One molecule
What is a polymer?
A long chain of monomers
What is the state symbol for solid, liquid, gas and solution?
Solid equals S liquid equals L gas equals G solution equals Aq
What is the formula for iron oxide?
FeO
What is the formula for iron hydroxide?
Fe(OH) (Squared)
What are some similarities between diamond and graphite?
Both are forms of carbon both have a single covalent bonds both have many atoms
What are some differences between diamond and graphite?
Graphite has flaxseeds conducts electric electricity. Each carbon has three forms of covalent bonds. Where is the diamond is a tetrahedral structure. Each carbon atom forms four covalent bonds does not conduct electricity.
How many carbon atoms are in a Buckminsterfullerene
60 carbon atoms
Are carbon nanotubes strong
Yes carbon nanotubes are strong
Does carbon nanotubes conduct electricity?
Yes, carbon nanotubes do conduct electricity
Can graphite conduct, heat and electricity
Yaa Graphite can conduct, heat and electricity
Why are some alloys harder than other pure metals?
Some alloys are harder than other pure metals, because the particles are differently sized, and therefore cannot slide across each other as easily
Why does some substances have low boiling points?
This is primarily because of the weak intermolecular forces
Why do some substances not conduct electricity?
Some substances, not conduct electricity as they do not have any free electrons
What happens to the intermolecular forces when a liquid turns into a gas?
The forces of attraction become less as the particles gain energy and move about more
