Exam 3 Concepts

Question 1

Lecture Slides

What four things do chemical equations show?

Answer 1

1. Reactants (left side) and products (right side)
2. Physical states of reactants and products (s, l, g, aq)
3. Relative number of particles of each reactant and product involved (coefficients)
4. Conditions necessary to make the reaction possible (Δ, P)

Question 2

Lecture Slides

The _ of a chemical equation represent the relative amounts of each reactant and product.

Answer 2

Coefficients

Question 3

Lecture Slides

On a larger scale, the coefficients of a chemical equation represent the _ of reactants and products.

Answer 3

Mole quantities

Question 4

Lecture Slides

When balancing combustion reactants…

Answer 4

Do not balance the O2 until last.

Question 5

Lecture Slides

A reaction with oxygen (O2) that usually generates heat and light.

Answer 5

Combustion reaction

Question 6

Lecture Slides

_ uses chemical equations to examine relationships between reactants and products in a reaction.

Answer 6

Stoichiometry

Question 7

Lecture Slides

A balanced chemical equation indicates the _ by which the reactants combine to form the products.

Answer 7

Molar Ratio

Question 8

Lecture Slides

In a chemical equation, the _ give us the conversion factors that we need to do stoichiometry.

Answer 8

Coefficients