Proton c/m? - ANSWERS>>+1, 1
Neutron c/m? - ANSWERS>>0, 1
Electron c/m? - ANSWERS>>-1, 1/1500
Mass number? - ANSWERS>>Number of protons +
neutrons
Atomic number? - ANSWERS>>Number of protons
Isotope? - ANSWERS>>Different atom of the same
element, same number of protons.
Diff number neutrons.
Mendeleev vs Now? - ANSWERS>>Mendeleev: Gaps for
elements, No noble gases, fewer elements.
Both had metals and non-metals.
Both had groups/periods
Periods? - ANSWERS>>Rows, Increasing atomic mass.
Period number = number shells.
Groups? - ANSWERS>>Elements similar properties.
,Same number outer electrons.
Ion? - ANSWERS>>An atom with a positive or negative
charge
Ionic compound structure? - ANSWERS>>Lattice.
Regular arrangement ions.
Held by ionic bonds between oppositely charged ions.
Covalent bond? - ANSWERS>>Pair of electrons shared
between 2 atoms
Ionic? - ANSWERS>>Compound composed of ions
Simple molecular (covalent)? - ANSWERS>>Atoms joined
by covalent bonds
Ionic properties? - ANSWERS>>High MP + BP - strong
forces between opposite ions. Only conduct when molten
or dissolved.
Covalent properties? - ANSWERS>>Low MP + BP - weak
intermolecular forces.
Poor conductors.
, Diamond? - ANSWERS>>Each carbon atom, 4 strong
covalent bonds = High MP.
Rigid lattice structure makes diamond hard.
Doesn't conduct, no free electrons.
Graphite? - ANSWERS>>Each atom, 3 covalent bonds =
strong
High MB + BP
No bonds between layers, move over each other.
Each atom, has one delocalized electron - conducts
electricity.
Fullerenes? - ANSWERS>>Molecules of carbon, arranged
in hexagons.
Used cage other molecules, deliver drugs.
Huge SA.
Graphene? - ANSWERS>>Fullerene.
Sheet of carbon atoms joined together in hexagons.
1 sheet thick.
Covalent bonds.
1 Delocalized electron to conduct electricity.
Metal properties? - ANSWERS>>Shiny solids.
Neutron c/m? - ANSWERS>>0, 1
Electron c/m? - ANSWERS>>-1, 1/1500
Mass number? - ANSWERS>>Number of protons +
neutrons
Atomic number? - ANSWERS>>Number of protons
Isotope? - ANSWERS>>Different atom of the same
element, same number of protons.
Diff number neutrons.
Mendeleev vs Now? - ANSWERS>>Mendeleev: Gaps for
elements, No noble gases, fewer elements.
Both had metals and non-metals.
Both had groups/periods
Periods? - ANSWERS>>Rows, Increasing atomic mass.
Period number = number shells.
Groups? - ANSWERS>>Elements similar properties.
,Same number outer electrons.
Ion? - ANSWERS>>An atom with a positive or negative
charge
Ionic compound structure? - ANSWERS>>Lattice.
Regular arrangement ions.
Held by ionic bonds between oppositely charged ions.
Covalent bond? - ANSWERS>>Pair of electrons shared
between 2 atoms
Ionic? - ANSWERS>>Compound composed of ions
Simple molecular (covalent)? - ANSWERS>>Atoms joined
by covalent bonds
Ionic properties? - ANSWERS>>High MP + BP - strong
forces between opposite ions. Only conduct when molten
or dissolved.
Covalent properties? - ANSWERS>>Low MP + BP - weak
intermolecular forces.
Poor conductors.
, Diamond? - ANSWERS>>Each carbon atom, 4 strong
covalent bonds = High MP.
Rigid lattice structure makes diamond hard.
Doesn't conduct, no free electrons.
Graphite? - ANSWERS>>Each atom, 3 covalent bonds =
strong
High MB + BP
No bonds between layers, move over each other.
Each atom, has one delocalized electron - conducts
electricity.
Fullerenes? - ANSWERS>>Molecules of carbon, arranged
in hexagons.
Used cage other molecules, deliver drugs.
Huge SA.
Graphene? - ANSWERS>>Fullerene.
Sheet of carbon atoms joined together in hexagons.
1 sheet thick.
Covalent bonds.
1 Delocalized electron to conduct electricity.
Metal properties? - ANSWERS>>Shiny solids.
