.When a metallic atom combines chemically with a non metallic atom, it produces an *
1 point
A.covalent compound
B.ionic compound
C.metallic compound
D.none of the above
2.The valence electrons are the outermost electrons which are directly involved in *
1 point
A.chemical bonding
B.ionic bonding
C.metallic bonding
D.all of the above
3.An example of a well known allotrope of carbon that exhibits hardness and hardness and high dispersion of light is *
1 point
A.diamond
B.gold
C.silver
D.none of the above
4. Used by plants to make food is called *
1 point
A.carbon
B.carbon dioxide
C.iodine
D.none of the above
5.Ionic compounds are solid at *
1 point
A.room temperature only
B.room pressure only
C.room humidity
D.room temperature and pressure
6. Metals conduct electricity when they are *
1 point
A.solid
B.molten
C.aqueous
D.gaseous
7. The physical properties of bonding are influenced by bonding between *
1 point
A.atoms
B.ions
C.molecules
D.all of the above
8. The simplest member of organic compounds is *
1 point
A.formaldehyde
B.formic acid
C.methane
D.methanol
9.Which of the following choices are considered to be polymers of amino acids? Are they: *
1 point
A.carbohydrates
B.lipids
C.proteins
D.none of the above
10. What makes carbon such a unique element? *
1 point
A.Elemental carbon comes in two forms, diamond and graphite.
B.Carbon forms four bonds, although the ground state configuration would predict C.the formation of fewer bonds.
D.Carbon forms covalent bonds rather than ionic bonds.
To a greater extent than any other element, carbon can bond to itself to form straight chains, branched chains and rings.
11. Dry ice is the solid form of what gas? *
1 point
A.Carbon dioxide
B.Helium
C.Nitrogen
D.Oxygen
12. Which of the following is a noble gas configuration? *
1 point
A.1s2 2s2
b) 1s2 2s2 2p6
c) 1s2 2s2 2p6 3s2
d) 1s2 2s2 2p6 3s2 3p6 3d10
13.Which of the following statements regarding carbon is incorrect? *
1 point
A.A single atom of carbon can participate in two double bonds
B.A single atom of carbon can participate in three single bonds and one double bond
C.A single atom of carbon can participate in four single bonds
D.A single atom of carbon can participate in two single bonds and one double bond
14.Most of the covalent compounds are found in *
1 point
A.gaseous state
B.liquid state
C.solid state
D.both in liquid and gaseous state
15. When two carbon atoms share two electron pairs then they form *
1 point
A.single bond
B.double bond
C.triple bond
D.coordinate covalent bond


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