chemical bonding

Question 1

atomic mass (2)

Answer 1

number of protons + neutrons in atom

symbol: A

Question 2

atomic number (2)

Answer 2

number of protons (and therefore electrons) in an atom

symbol: Z

Question 3

atom definition (1)

Answer 3

the smallest indivisible particle of matter

Question 4

neil bohr model (1)

Answer 4

ohbij i mean orbit looking diagram w circles and all elecs

Question 5

valence electrons (2)

Answer 5

electrons on the outermost shell of an atom, used for chemical bonding

Question 6

aufbau diagrams (2)

Answer 6

square diagrams. NB arrow w energy level on side and S has 2 total elecs and P has 6 total elecs.
often has electron config with it

Question 7

electron configuration (2)

Answer 7

arrangement of electrons around an atom.

can be written as e.c 1s2 2s2 2p6 etc..

Question 8

ion (2)

Answer 8

atom with full valence shell, achieved by gaining or losing electrons

Question 9

isotope (2)

Answer 9

atoms with same atomic number, but different atomic mass because of no. of neutrons

Question 10

relative atomic mass (2)

Answer 10

weighted average of diff atomic masses in isotopes of same element
unit: a.m.u

Question 11

formula for relative atomic mass (1)

Answer 11

mass isotope x % + mass isotope x %

Question 12

lewis diagram (1)

Answer 12

the boring one that only shows valence

Question 13

ionic bonding (2)

Answer 13

bond between metal and non metal where atoms give up and gain electrons to have complete valence shell

Question 14

cation (1)

Answer 14

metal that loses electrons to form a positive ion

Question 15

anion (1)

Answer 15

non-metal that gains electrons to form a negative ion

Question 16

the octet rule (1)

Answer 16

atoms will gain, lose or share electrons to get full set of 8 valence electrons

Question 17

chemical bonding (2)

Answer 17

interactions between elements/compounds which result in new substances with different properties to its constituents

Question 18

covalent bonding (2)

Answer 18

bonding between non-metals where sharing of electrons occur

Question 19

cooper structure (1)

Answer 19

like lewis diagram but lines for chemical bonds

Question 20

metallic bonding (2)

Answer 20

bonding of metal atoms, valence electrons overlap and cause them to break free from atoms

Question 21

delocalised electrons (2)

Answer 21

“sea” of electrons formed from metallic bodning, also called free electrons

Question 22

properties of metals (4)

Answer 22

• conduct heat
• conduct electricity
• ductile
• malleable

Question 23

stock notation (1)

Answer 23

roman numerals to specify amount of electrons given up by transition metals

Question 24

chemical nomencluture (1)

Answer 24

collection of rules for naming compounds