4 Chem Bonding (P/C)

Question 1

Chemical bonding occurs due to __

Answer 1

transfer or sharing of electrons between atoms in order to achieve the noble gas electronic configuration.

Question 2

Helium has a one completely filled electronic shell has a __ electronic configuration.

Answer 2

Duplet

Question 3

Neon and argon has two and three completely filled electronic shell has a __ electronic configuration.

Answer 3

Octet

Question 4

As noble gases have stable electronic configuration, they do not form bonds and are ___ (exist as single atoms)

Answer 4

monatomic

Question 5

Non-metals tend to __ electrons to form __ while metals tend to __ electrons to form __.

Answer 5

gain; anions; lose; cations

Question 6

ionic bonds refer to the ____

Answer 6

electrostatic attraction between cations and anions.

Question 7

(P) describe the structure of ionic compound

Answer 7

oppositely charged ions are arranged regularly in a giant ionic crystal lattice structure.

Question 8

covalent bond is formed when ___

Answer 8

two electrons are shared between two atoms.

Question 9

examples of covalent compounds are

Answer 9

water, carbon dioxide, ammonia

Question 10

examples of ionic compounds are

Answer 10

sodium chloride, magnesium carbonate, calcium sulfate

Question 11

a double covalent bond is formed when __

Answer 11

two electrons are shared by each atom.

Question 12

central atom in the covalent bonding is the one that __

Answer 12

forms the most number of bonds.

Question 13

(P) Metallic bonds are the __

Answer 13

strong electrostatic forces of attraction that exist between cations and the ‘sea of delocalised electrons’

Question 14

draw dot and cross diagram of sodium oxide

Answer 14

ionic drawing, check with Mr Ben ;p

Question 15

draw dot and cross diagram of ammonia

Answer 15

covalent drawing, check with Mr Ben ;p

Question 16

draw dot and cross diagram of urea CO(NH2)2

Answer 16

covalent drawing, check with Mr Ben ;p