CC1 Flashcards
are the melting and boiling points of covalent compounds high, or low, and why
low because of the weak intermolecular forces between the molecules
i’m melting and boiling points of ionic, compounds, high or low, and why
High because of the strong electrostatic forces between the ions
do covalent compounds conduct, electricity
no
do ionic compounds conduct, electricity
only when molten or dissolved not been solid
give one example of a polymer
polyethene
give two properties of metals
they are malleable, and can conduct electricity
how are elements arranged in the periodic table?
in order of increasing atomic number
how big is the nucleus compared to the overall size of the atom?
very small
how are ionic bonds formed?
find the transfer of electrons
how did mendeleev think he had to arrange the elements
in terms of increasing atomic mass
how many bonds does each atom have in a diamond
4 bonds
how many bonds does each atom from a graphaite
3
if an element is in group one, how many electrons are there in the outer shell?
1
if an element is in group one, what will the charge on the ion be
+
what are ionic compounds made from?
Metal ion and a non-metal ion
