Sodium and Nitrate Chemistry Concepts

The video tutorial explains how to write the chemical formula for sodium nitrate (NaNO3). It begins by identifying the element symbol and charge for sodium (Na) from the periodic table, which is +1. For the nitrate ion (NO3), the charge is -1, found from a list of common polyatomic ions. The tutorial demonstrates how these charges balance each other to form a neutral compound, resulting in the formula NaNO3. The video concludes with a suggestion to visit breslin.org for more practice in writing formulas and naming chemical compounds.

What is the element symbol for sodium and its charge?

• Na, +1

• K, +1

• S, -2

• Na, -1

Where can you find the nitrate ion information?

• In a chemistry textbook

• On a periodic chart of elements

• On the periodic table

• In a list of common polyatomic ions

What is the chemical formula for the nitrate ion?

• NO2

• NO3

• NH4

• N2O

How do the charges of sodium and nitrate balance each other?

• Both have a charge of -1

• Sodium has a charge of +1 and nitrate has a charge of -1

• Sodium has a charge of -1 and nitrate has a charge of +1

• Both have a charge of +1

What is the correct formula for sodium nitrate?

• Na3NO

• NaNO2

• Na2NO3

• NaNO3