LEC MOD 2

Question 1

force that attracts and holds two or more atoms together to form a complex unit

Answer 1

Chemical bond

Question 2

combining atoms results to a?

Answer 2

Chemical compound

Question 3

physical properties of ionic compounds:

Answer 3

solid at room temp/ crystalline
high MP and BP
soluble in polar
able to conduct electricity in aque sols
joined by ionic bonds

Question 4

these are formed through the transfer of one or more electrons from an atom to another atom

Answer 4

Ionic bonds

Question 5

these are formed through the sharing of one or more electrons from one atom to another

Answer 5

Covalent bonds

Question 6

electrons located at the outermost or highest electron shell of a representative or noble gas element/s.

Answer 6

Valence electrons

Question 7

diagrams that represents the number of valence electron each element has

Answer 7

Lewis structure / electron-dot structure

Question 8

it meanss the element doess not easily undergo spontaneous change or reaction

Answer 8

stable

Question 9

exception/s in octet rule:

Answer 9

Lithium Li
Beryllium Be
Helium He
Hydroggen H

Question 10

an atom that is electrically charged as a result of loss or gain of electrons

Answer 10

Ion

Question 11

is defined as an atom and ion/s that have the same number and config of electrons

Answer 11

Isoelectronic

Question 12

are covalent bonds where the shared electrons cam from a single atom only

Answer 12

Coordinate bonds

Question 13

is a type of chemical bonding where both ionic and covalent charges are present

Answer 13

Mixed bonding

Question 14

is a measure of the ddegree of inequality in the attraction of bonding electrons

Answer 14

Molecular Polarity

Question 15

A kind of polarity where it has symetrical distribution of electron charge; equal distribution of electrons

Answer 15

Non-polar

Question 16

a kind of polarity that has assymetrical distribution of electron charge where the attraction of bonding is greater in one atom.

Answer 16

Polar

Question 17

it is the measure of an atom’s attraction for electron in a bond; increases from left to right and decreases from top to bottom

Answer 17

Electronegativity

Question 18

an abbreviation used to indicate an element or an atom of the element

Answer 18

Symbols and formulas

Question 19

compoundds that contains two element

Answer 19

Binary compounds

Question 20

binary salt naming; formula and example

Answer 20

M+NM
M + stem of NM + ide
NaCl- sodium Chloride

Question 21

Metalss with variable ionic charges:

Answer 21

Hg- 1,2
Cu-1,,2
Au-1,,3
Co-2,3
Fe-2,3
Sn- 2,,4
Pb-2,4

Question 22

metallic oxide; formula andd example

Answer 22

metal + O
Name of M + oxide
MgO- Magnesium Oxide

Question 23

Binary covalent compound; formula and example

Answer 23

NM + stem of NM + ide
USE prefix for quantity
PCl5- Phossphorus pentachloride

Question 24

Binary acid; formula and examples

Answer 24

Hydrogen + NM
Hydro + stem of NM + ic + acid
HCl- hydrochloriic acid

Question 25

non metallic oxide; formula and examples

Answer 25

NM + O Name of NM + oxide USE greek prefixes NO2- Nitrogen dioxide

Question 26

ternary acids; formula and example

Answer 26

Hydrogen + polyatomic ion Convert ate to ic convert ite to ous HNO3- Nitrate= Nitric Acid

Question 27

Ternary salts; formula and examples

Answer 27

M + polyatomic ion | name of M + name of PA ion

Question 28

acid salts; frmula and example

Answer 28

M + PA ion with H | NaHCO3- Sodium Bicarbonate

Question 29

metallic hydroxides; formula and examples

Answer 29

Name of M + hydroxide | Ca(OH)2- calcium Hydroxide

Question 30

ammonium compounds; formula and examples

Answer 30

with NH4 | Ammonium + name of element

Question 31

Cyanides; formula and examples

Answer 31

Name of M + cyanide