1. Complete: e.) Nitrogen:
SMARTTEACHING – Chemistry: a.) Organic Chemistry (also known as Carbon Chemistry) refers to Symbol:______(i), Atomic nu
Mass number: _____________
C: Exercise – Grade 12 - Chemistry molecules and chemical structures that are synthesized from Carbon
protons:______(iv), Number of neutro
[symbol:_____(i)] as the central element of these Organic Structures.
Organic Chemistry (1) number on Periodic Table:________(
Organic molecules are not only prepared from carbon but are also electrons _____(vii), Valence or bondi
- composed of atoms from the elements, Hydrogen Metal / non-metal:_______
Alkanes [symbol:________(ii)], Oxygen [symbol:______(iii)], Nitrogen
f.) Bromine:
Alkenes [symbol:________(iv), Sulphur [symbol:_____(v)], as well as atoms
Symbol:_____(i), Atomic numbe
Alkynes from the halogens, (F) ___________(vi), (Cl) ________________(vii),
number:_________(iii), Number of
(Br) _____________(viii) and (I) ______________(ix) that can be found
Molecular formula Number of neutrons:________(v), Gr
in these structures. Table:_________(vi), Number o
Molecular structure
b.) Carbon: ________(vii), Valence or bonding a
IUPAC names Symbol:_____(i), Atomic number:______(ii), Mass number: _____(iii), Metal / non-metal: _______
Number of protons:_____(iv), Number of neutrons: ______(v), Group
g.) Chlorine:
number on Periodic Table:______(vi), Number of valence electrons
Symbol:_____(i), Atomic number: __
______(vii), Valence or bonding ability:______(viii), Metal / non-
_________(iii), Number of protons:_
metal:______________(ix).
neutrons: ________(v), Group n
Complete by writing the answer in the open space or c.) Hydrogen: Table:_________(vi), Number o
choose the correct option in brackets. Symbol:_____(i), Atomic number:______(11), Mass number: ________(vii), Valence or bonding a
__________(iii), Number of protons:_______(iv), Number of neutrons: Metal / non-metal: _______
________(v), Group number on Periodic Table:_________(vi), Number
of valence electrons ________(vii), Valence or bonding
ability:_________(viii), Metal / non-metal:______________(ix). h.) Sulphur:
Symbol:_____(i), Atomic numbe
direct.science@gmail.com d.) Oxygen:
number:__________(iii), Number o
© direct-science Symbol:_____(i), Atomic number:______(ii), Mass
Number of neutrons:________(v), Gr
number:__________(iii), Number of protons:_______(iv), Number of
Table:_________(vi), Number o
neutrons:________(v), Group number on Periodic
________(vii), Valence or bonding a
Table:_________(vi), Number of valence electrons ________(vii),
Metal / non-metal:_______
Valence or bonding ability:_________(viii), Metal / non-
metal:______________(ix).
, 2. Complete the following: c.) Double covalent bond – during the formation of this bond a total of
a.) Lewis structure of Carbon: (1/2/3/4/5/6) ___(i) electrons are shared between two C-atoms.
__________________________________________________________
This double bond contains (1/2/3/4/5/6) _____(ii) electrons.
b.) Electron configuration (spd-notation) of carbon:
One carbon atom has (1/2/3/4) ______(iii) unpaired or single electrons
__________________________________________________________ and can form a maximum of (1/2/3/4) _____(iv) double bonds with
c.) One carbon atom has (1/2/3/4) ______(i) half-filled orbitals, which (1/2/3/4) _____(v) other C-atoms.
means that the carbon atom contains (1/2/3/4) _______(ii) unpaired or Write the Lewis structure indicating a double covalent bond between Draw the Couper structure of a carbon
single electrons that can take part in the formation of three types of two carbon atoms. and single bonds formed with ot
covalent bonds.
_____________________________________________________ (vi)
3. Complete: Write the Couper structure indicating a double covalent bond between
a.) Single covalent bond – during the formation of a single covalent two carbon atoms.
bond a total of (1/2/3/4/5/6) ______(i) electrons are shared between two ______________________________________________________ (vii)
C-atoms. The single bond consists of (1/2/3/4/5/6) _____(ii) electrons.
d.) Carbon is in group (3/4/5) ______(i) on the Periodic Table which
One carbon atom contains (1/2/3/4) ____(iii) unpaired or single electrons
means that one carbon atom has a bonding capacity or valence of
and, as a result, it can form a maximum of (1/2/3/4) _____(iv) single
(1/2/3/4) _____(ii) and it can form a total of (1/2/3/4/5/6) ____(iii) double
bonds with (1/2/3/4) ____(v) other C-atoms. _______________________________
bonds when (1/2/3/4) ____(iv) electrons are donated by this carbon
Write the Lewis structure indicating a single covalent bond between two e.) Triple covalent bond – during t
atom to be shared with (1/2/3/4) _____(v) other carbon atoms. When a
carbon atoms. bond a total of (1/2/3/4/5/6) ____(i)
carbon atom is involved in single and double bonds this carbon atom
______________________________________________________ (vi) between two carbons. The triple bon
can form (1/2/3/4) ____(vi) single bond(s) and (1/2/3/4) ____(vii) double
Write the Couper structure indicating a single covalent bond between ___(ii) electrons. One carbon atom
bond(s) when the C-atom donates a total of (1/2/3/4) _____(viii)
two carbon atoms. unpaired or single electrons and as
electrons, which are shared by (1/2/3/4) _____(ix) other C-atoms. Draw
______________________________________________________ (vii) maximum of (1/2/3/4) ___(iv) triple
the Lewis structure of a carbon atom formed a double bond and single
_____(v) other carbon atoms and one
b.) Carbon is in group (3/4/5) _______(i) on the periodic table, which bonds with other carbon atoms.
carbon atom.
means it has a valency or bonding capacity of (1/2/3/4) _____(ii) and has
the ability to form a total of (1/2/3/4/5/6) _________(iii) single bonds. _______________________________________________________ (x)
During the formation of these bonds, the C-atom shares (1/2/3/4) ,
______(iv) electrons with (1/2/3/4) _______(v) other C-atoms.
, Draw the Lewis structure indicating a triple covalent bond between two Alkanes are a group of molecules formed between carbon atoms and 5. Complete:
carbon atoms. hydrogen atoms with only single bonds between the atoms in these a.) Carbon is a group (3/4/5) _______
_______________________________________________________ (vi) structures. All these molecules have unique Names, formulae and
that one carbon atom has a bonding
Draw the Couper structure indicating a triple covalent bond between structures and the number of carbon atoms present in the structure will
(1/2/3/4) _____(ii) and a carbon ato
determine the Name of molecule.
two carbon atoms.
(1/2/3/4/5/6) _____(iii) double bon
______________________________________________________ (vii) 4. a.) Complete the following: H (1/2/3/4) ____(iv) electrons to share wi
f.) Carbon is in group (3/4/5) _______(i) on the periodic table, which H C H other carbon atoms. When two carbo
means that one carbon atom has the bonding capacity or valence of other to form a double bond each ca
H
(1/2/3/4) ___(ii) and has the ability to form a total of (1/2/3/4/5/6) ____(iii) (1/2/3/4) _____(vi) electrons that can b
Number of carbon atoms: ______(i) : Number of hydrogen atoms: ___(ii)
triple bond when one carbon atom donates (1/2/3/4) ____(iv) electrons to two carbon atoms. Each carbon ato
Number of single bonds: _____(iii) : Number of double bonds: _____(iv)
share with (1/2/3/4) _____(v) other carbon atom. When a carbon atom is ____(vii) valence electrons left, which c
Number of triple bonds: ______(v) : Name: ____________________(vi)
involved in single and triple bonds this carbon atom can form (1/2/3/4) single bonds with two different H-atom
_____(vi) single bond(s) and (1/2/3/4) _____(vii) triple bond(s) while b.) Complete the following: H H atom has at least one double bond th
donating (1/2/3/4) _____(viii) electrons to share with (1/2/3/4) _____(ix) are called (saturated / un
other carbon atoms. H C C H
____________________________(vii
g.) Carbon is a group (3/4/5) _______(i) element. This means that one
H H C C
H
carbon atom has a bonding ability or valence of (1/2/3/4) _____(ii) and Number of carbon atoms: ____(i) : Number of hydrogen atoms:_____(ii)
can form a total of (1/2/3/4/5/6) _________(iii) single bonds when this Number of single bonds: ____(iii) : Number of double bonds: ______(iv)
H H
carbon atom donates a total of (1/2/3/4) ______(iv) electrons for sharing Number of triple bonds: _____(v) : Name: _____________________(vi)
with (1/2/3/4) _______(v) other atoms. When carbon is bonded to One carbon atom can form a total of (1/2/3/4/5/6) ____(vii) single bonds.
hydrogen [group number: _____(vi); valence: ______(vii)] the H-atom
donates (1/2/3/4) _____(viii) electron(s) for sharing with the carbon atom. Alkenes are a group of organic mol
The H-atom can form only (single / double / triple) ____________(ix) between carbon (C) atoms and hydro
bonds with the carbon atom and one carbon atom can form (1/2/3/4) least one double bond is formed bet
All these molecules have unique N
______(x) single bonds with four (4) hydrogen atoms. Since the four
structures and the number of carbo
bonds between the carbon atom and the four hydrogen atoms are (single/
structure will determine the Na
double / triple) _________(xi) bonds these bonds are known as
(saturated / unsaturated) __________________(xii) bonds.