Bonding and Balancing Review

Front

What are the reactants in the reaction: 2H₂ + O₂ → 2H₂O?

Back

2H₂ and O₂

Front

Ionic compounds are usually formed from _____ (e.g., NaCl).

Back

a metal and a nonmetal.

Front

What is the correct formula for three hydrogen (H), one sulfur (S), and four oxygen (O)?

Back

H₃SO₄

Front

According to the Law of Conservation of Mass, if I start with 5 grams of H₂ and 10 grams of O₂, how many grams of H₂O will I end up with?

Back

15 grams of H₂O.

Front

What does the subscript in a chemical formula indicate?

Back

How many atoms are present.

Front

Define a chemical reaction.

Back

A process where reactants are transformed into products.

Front

What is the Law of Conservation of Mass?

Back

Mass is neither created nor destroyed in a chemical reaction.

Front

What is a chemical formula?

Back

A representation of a substance using symbols for its constituent elements.

Front

What is the difference between a molecule and a compound?

Back

A molecule is two or more atoms bonded together; a compound is a molecule that contains at least two different elements.

Front

What is the significance of coefficients in a chemical equation?

Back

Coefficients indicate the number of molecules or moles of a substance involved in the reaction.