Stoichiometry Vocabulary

What is the first thing you must do to solve a stoichiometry problem?

• Write a Balanced Equation

• Write an Unbalanced Equation

• Panic

• Avogadro's Number

The empirical formula is the formula that includes only the simplest whole

number ratio of elements in a compound

• True

• False

What is a Excess Reagent?

• amount you end with

• what you run out of first

• what you have left over

• what you start with

What is a Limiting Reagent?

• speeds up a reaction

• what you run out of first

• what you have left over

• slows down a reaction

The calculation of the relationships between different molecules in a reaction is the definition of __________________.

• physics

• algebra

• stoichiometry

• language arts

Tags

NGSS.HS-PS1-7

A mole of any substance is how many particles?

• 6.02 x 10²³

• 6.02 x 10^-23

• 602 million

• 602

In the reaction: P₄ + 6Cl₂ ---> 4PCl₃, how many molecules of Phosphorous Chloride are there in the product?

• 1

• 2

• 4

• 12

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is the molar mass of C₆H₁₂O₆?

• 180 g

• 18 g

• 82,944 g

• 24 g

Tags

NGSS.HS-PS1-7

What is the molar mass of a substance?

• A) The mass of one mole of a substance in grams

• B) The mass of one atom of a substance in grams

• C) The mass of one molecule of a substance in grams

• D) The mass of one liter of a substance in grams

In a balanced chemical equation, what does the coefficient in front of a compound represent?

• A) The number of moles of the compound

• B) The number of atoms in the compound

• C) The number of molecules in the compound

• D) The number of grams of the compound

Tags

NGSS.HS-PS1-7