ICP Unit 2 Post Test_ Chemical Bonding

Which of the following is made up of a coordinate covalent bond?

• sodium chloride (NaCl)

• ammonia (NH₃)

• chlorine (Cl₂)

• aluminium bromide (AlBr₃)

• carbon monoxide (CO)

The placement of the double bond goes between which two atoms in this formaldehyde molecule? Note: Hydrogen, carbon, and oxygen have one, four, and six valence electrons respectively.

• between the carbon and a hydrogen atom

• between the carbon and the oxygen atom

• between the two hydrogen atoms

• between the oxygen and a hydrogen atom

• between the oxygen and both hydrogen atoms

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of the following is the correct Lewis structure for ammonia (NH3)? Note: Hydrogen and nitrogen have one and five valence electrons respectively.

• [Lewis structure A]

• [Lewis structure B]

• [Lewis structure C]

• [Lewis structure D]

• [Lewis structure E]

Tags

NGSS.HS-PS1-1

Why are metals good conductors of heat and electricity?

• anions rotate around the stationary electrons

• cations rotate around the stationary electrons

• free moving atoms in metals carry both heat and electric current

• free moving electrons in metals carry both heat and electric current

• free moving protons in metals carry both heat and electric current

Tags

NGSS.HS-PS3-5

What is the formula for the compound dinitrogen pentoxide?

• N4O5

• N5O4

• N4O6

• N2O2

• N2O5

What is the chemical name of the compound Cu2CO3?

• Copper (I) Carbonate

• Copper (II) Carbonate

• Copper (III) Carbonate (II)

• Copper (II) Carbonate

• Copper Carbonate

What is the formula for the compound iron (III) sulfate?

• FeSO4

• Fe3(SO4)2

• Fe2(SO4)3

• Fe2(SO4)2

• Fe3(SO4)5

Which is a binary ionic compound?

• MgCl₂

• C₆H₁₂O₆

• CO₂

• PO₄³⁻

• CH₄

In a molecule of calcium sulfide, calcium has two valence electron, and a sulfur atom has six valence electrons. How many pairs of electrons are present in the valence shell of the Lewis structure of calcium sulfide?

• one

• two

• three

• four

• none

How many valence electrons does the Lewis structure for a chlorine atom show?

• four

• five

• six

• seven

• eight

Tags

NGSS.HS-PS1-1