Stoichiometry Basics Quiz

The mathematical process of calculating the amounts of products and reactants in a chemical reaction based on the law of conservation of mass.

The coefficients represent the number of atoms or molecules of that substance that participate in the reaction.

False (B)

<p>A ratio that describes the strict mathematical relationship between two values, representing a proportion.</p> Signup and view all the answers

<p>30 (D)</p> Signup and view all the answers

<p>1.2 x 1026 (C)</p> Signup and view all the answers

<p>18 (D)</p> Signup and view all the answers

<p>2.13 (A)</p> Signup and view all the answers

<p>2.10 (C)</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>The Greek words <em>stoicheion</em> (element) and <em>metron</em> (measure)</p> Signup and view all the answers

<p>The law of conservation of mass states that mass cannot be created or destroyed in ordinary chemical reactions. Stoichiometry calculation are based on this law.</p> Signup and view all the answers

<p>The coefficients in front of elements and compounds represent the number of atoms and molecules that participate in a reaction.</p> Signup and view all the answers

<p>The coefficients represent the number of moles of each reactant and product. (A)</p> Signup and view all the answers

<p>30 molecules (C)</p> Signup and view all the answers

<p>1.2 x 10^26 molecules (A)</p> Signup and view all the answers

<p>18 molecules (D)</p> Signup and view all the answers

<p>2.13 mol NH3</p> Signup and view all the answers

<p>2.10 mol N2</p> Signup and view all the answers

<p>True (A)</p> Signup and view all the answers

The process of calculating the amounts of reactants and products in a chemical reaction using the law of conservation of mass.

An equation showing the same number of each atom on both sides of the reaction arrow.

Numbers in front of chemical formulas in a balanced equation representing the mole ratio of reactants and products.

The ratio of moles of one substance to moles of another substance in a balanced chemical reaction.

A unit of measurement representing 6.022 x 10^23 particles (atoms, molecules, or ions).

In any chemical reaction, the total mass of the products equals the total mass of the reactants.

A statement that two ratios are equal.

A combustion reaction producing only carbon dioxide and water.

Combustion with limited oxygen, producing carbon monoxide.

A group of two or more atoms held together by chemical bonds.

A process that involves the rearrangement of atoms to form new substances.

The substances that are present before a chemical reaction.

The substances that are present after a chemical reaction.

The ratio of coefficients in a balanced chemical equation. It represents the proportion of molecules or moles of reactants and products involved in the reaction.

The coefficient represents the number of moles of that substance involved in the reaction. It's directly proportional to the number of molecules.

The general stoichiometric ratio in a balanced equation can be used to calculate the amounts of reactants or products needed or produced in a specific situation.

Different ratios of the same reactants can lead to different products. For example, incomplete combustion produces CO, while complete combustion produces CO2.