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Physical Science - Molecules And Compounds

Test Description: Molecules and Compounds

Instructions: Answer all questions to get your test result.

1) What is the proper name for the ionic compound KCl?

Apotassium clorox Bpotassium chloride Cpotassium chlorine Dpotasside chloride

2) What is the proper name for the covalent compound B2Si?

Adiboron silicon Bboron silicon Cboron disilicide Ddiboron silicide

3) How many valence electrons does lithium have?

A7 B2 C1 D3

4) What is the mass for water (H2O)?

A9 B10 C18 D17

5) What is the formula for dinitrogen pentaoxide?

AN5O2 BN2O5 CN2O DN3O4

6) What is the proper name for the covalent compound SCl4?

Amonosulfur tetrachloride Bsulfide chloride Csulfur tetrachloride Dsulfide tetrachlorine

7) In covalent bonds,

Aelectrons are transferred from one atom to another Belectrons are both shared and transferred between atoms Celectrons are lost to other atoms Datoms share electrons

8) A Lewis dot diagram shows

Aall of the energy levels Bthe number of protons Cthe number of valence electrons Dthe total number of electrons

9) Polyatomic ions consists of

Amore than one type of atom Bpositive charges Cnegative charges Da single atom

10) In ionic bonds,

Aelectrons are transferred from one atom to another Batoms share electrons Celectrons are both shared and transferred between atoms Delectrons are lost to other atoms

*select an answer for all questions

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