Unit 2 HChem Review Flashcardizz

Front

What is the chemical formula of tetraphosphorus heptaoxide?

Back

P₄O₇

Front

What is the name of the acid with the formula H₃PO₃?

Back

phosphorous acid

Front

What is the name of FeCl₂?

Back

iron (II) chloride

Front

What is the formula for phosphorous acid?

Back

H₃PO₃

Front

Which family is made of stable elements?

Back

noble gases

Front

Define a chemical formula.

Back

A chemical formula is a way of expressing information about the proportions of atoms that constitute a particular chemical compound.

Front

What are noble gases?

Back

Noble gases are a group of chemical elements that are odorless, colorless, monatomic gases with very low chemical reactivity.

Front

What is the difference between phosphoric acid and phosphorous acid?

Back

Phosphoric acid (H₃PO₄) contains one more oxygen atom than phosphorous acid (H₃PO₃).

Front

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

Back

The Roman numeral indicates the oxidation state of the iron ion, which is +2 in this case.

Front

What are alkali metals?

Back

Alkali metals are a group of elements in Group 1 of the periodic table, known for being highly reactive and having one electron in their outermost shell.