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WorksheetsQuiz 1 second tearm prep 1 unit 1 lesson 1
Total questions: 10
Worksheet time: 5mins
1-The element, Whose atomic number is ................................forms an ionic bond with oxygen.
a- 2
b- 10
c- 12
d-16
2-Nonmetal element its nucleus contains 18 neutrons , its electrons revolve in 3 energy levels and it tends to gain one electron during chemical reactions , its mass no. equal..................................
a-17
b-18
c-35
d- 40
3-Single covalent bond can exist in.................... Molecule.
a-hydrogen
b-oxygen
c-nitrogen
d- sodium
4-In triple covalent bond , each atom shares with …………………….
a. one electron
b. two electrons
c. three electrons
d. three pairs of electrons
5- All the following are covalent molecules except ………………………
a. H2O
b. Mg O
c. H Cl
d. O2
6- The bond in water molecule is an ionic bond .
a- true
b-false
7-Metals tend to lose electrons and convert into negative ions.
a- true
-false
8-The bond in sodium chloride is a single covalent bond.
a- true
b- false
9- The molecule of noble gases are diatomic molecules
a-true
b- false
10-In a positive ion , the number of electrons is greater than the number of protons .
a- true
b- false
