Ionic Compounds practice test

Ionic compounds conduct electricity EXCEPT when they are 

• in water solution
• liquid
• binary compounds
• solid

The melting points of ionic compounds are higher than the melting points of molecular compounds because

• ionic substances tend to vaporize at room temperature
• ionic substances are brittle
• attractive forces between ions are greater than the attractive forces between molecules
• none of these answers

Tags

NGSS.HS-PS1-3

An element with which of the following electron configuration is NOT chemically reactive?

• 1s^22s^22p^4
• 1s^2^2s^22p^63s^23p^5
• 1s^22s^22p^63s^23p^6
• 1s^22s^22p^63s^23p^64s^1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Ionic bonding always takes place between 

• ions of opposite electrical charge
• ions of the same electrical charge
• ions of the same size
• ions of the same size and opposite charge

Two suffixes that indicate the presence of oxygen in a polyatomic ion are

• -ite and -ate
• -ite and -ide
• -ate and -ide
• -thio and -ate

The correct name for the compound with the formula CaSO_4 is 

• calcium sulfur oxide
• calcium sulfide
• calcium sulfate
• calcium sulfur tetroxide

The only formula listed below that represents a polyatomic ion is

• HCO31-
• H2SO4
• Cl1-
• Na1+

The only property listed that is NOT characteristic of ionic compounds is 

• high melting point
• hardness
• lack of crystal structure
• brittleness

If a compound forms by ionic bonding, which is NOT true?

• A positively charged atom or gorup of atoms attracts a negatively charged atom or group of atoms. 
• The net charge of the compound is zero.
• The compound consists of just two atoms, each of opposite charge. 
• Several ions group together in a tightly packed structure. 

Tags

NGSS.HS-PS1-3

The correct formula for magnesium oxide is 

• Mg_2O
• MgO
• MgO_2
• Mg_2O_3

Tags

NGSS.MS-PS1-1