Conductivity Of Substances And Solutions Lab (Page 2 of 2) in pdf

Conductivity Of Substances And Solutions Lab Page 2

IONIC COMPOUNDS: Do NOT conduct electricity as SOLIDS, but DO CONDUCT ELECTRICITY in SOLUTION

(electrolytes).

Ionic Compounds typically have a _________________ attached to nonmetals in its compound. (look above)

*WHY? These compounds DO CONDUCT ELECTRICITY IN SOLUTION because they are made up of oppositely

charged particles called IONS. When in solution, these ions can move freely. The presence of an electric field

causes the charged particle to migrate (or move around) resulting in an electric current.

***The only exception are ACIDS: LIKE _______________________ (which compound) in your lab. They are

made up of ALL NONMETALS and MOLECULAR COMPOUNDS but THEY ARE ALSO ELECTROLYTES.

***Therefore, ACIDS must also be made up of charged particles called _______________

(LOOK ABOVE).

*Using the information you just read, categorize all the COMPOUND SUBSTANCES in their respective

categories.

Ionic Compounds

Molecular Compounds

Molecular Acid

3. Summary of properties of IONIC COMPOUNDS , MOLECULAR COMPOUNDS and ACIDS: Fill in the table below

with the physical properties of each of these compounds. Make sure you READ #2 CAREFULLY.

IONIC COMPOUNDS

MOLECULAR

ACIDS

COMPOUNDS

Made up of …

(metal /nonmetal or all

nonmetals)

Made up of oppositely

charged particles called IONS

(YES IONS OR NO IONS)

Conducts electricity in SOLID

form

(YES OR NO)

Conducts electricity in

SOLUTION

(YES/ELECTROLYTE OR

NO/NONELECTROLYTE)

4. Why can ionic compounds conduct electricity in solution (electrolytes), but molecular compounds will not

conduct electricity as solids or in solution (nonelectrolytes)? READ ABOVE in # 2

___________________________________________________________________________________________

5. Draw a particle diagram of an ionic cmpd as a solid and an ionic cmpd in solution. How does your particle

diagram support the fact that all ionic compounds are electrolytes?

Conductivity Of Substances And Solutions Lab Page 2