Foundation in chemistry

Question 1

orbital

Answer 1

a region in space where one is likely to find an electron. they can hold up to 2 electrons as long as they have opposite spin

Question 2

relative isotopic mass

Answer 2

mass compared with 1/12th mass of carbon-12

Question 3

relative atomic mass

Answer 3

weighted mean mass compared with 1/12th mass of carbon-12

Question 4

ionic bonding

Answer 4

electrostatic atracton between positve and negatve ions

Question 5

covalent bonding

Answer 5

strong electrostatic attraction between a shared pair of electrons and the nuclei of the bonded atoms

Question 6

metallic bonding

Answer 6

strong electrostatic attraction between the cations and the delocalised electrons

Question 7

electronegativity

Answer 7

the ability of an atom to attract the bonding pair of electrons in a covalent bond

Question 8

dipole

Answer 8

the difference in charge between the 2 atoms caused by a shift in electron density in the bond

Question 9

hydrogen bonding

Answer 9

permanent dipole-dipole interaction found between a hydrogen atom bonded to an electronegative atom