Chem Regular Midterm Practice

Front

What is the correct name of Cu₃N₂?

Back

copper (II) nitride

Front

How do you convert temperature from Kelvin to Celsius?

Back

Celsius = Kelvin - 273.15

Front

Which of the following is a pure substance?

Back

table salt

Front

What is the name of FeCl₂?

Back

iron (II) chloride

Front

What can be predicted about the average atomic mass of vitellium based on its isotopes?

Back

It will be closer to the mass of Vi–193.

Front

What is the formula for calculating average atomic mass?

Back

Average Atomic Mass = (mass1 * %abundance1) + (mass2 * %abundance2) + ...

Front

Define a pure substance.

Back

A material with a constant composition and consistent properties throughout.

Front

What is the significance of the Roman numeral in iron (II) chloride?

Back

It indicates the oxidation state of the iron ion, which is +2.

Front

How do you determine the oxidation state of an element in a compound?

Back

By using rules such as the sum of oxidation states in a neutral compound is zero.

Front

What is the difference between a compound and a mixture?

Back

A compound is a substance formed when two or more elements chemically bond, while a mixture is a combination of two or more substances that retain their individual properties.