Chemistry Chapter 7 Vocabulary

Substances that undergo change in a chemical reaction.

Substances formed as a result of a chemical change.

A representation of a chemical reaction in which the reactants and products are expressed as formulas.

<p>False</p> Signup and view all the answers

<p>By balancing a chemical equation.</p> Signup and view all the answers

<p>The numbers that appear before the formulas used to balance equations.</p> Signup and view all the answers

<p>An amount of substance that contains approximately $6.022 imes 10^{23}$ particles.</p> Signup and view all the answers

<p>The mass of one mole of a substance.</p> Signup and view all the answers

<p>By using a balanced chemical equation and the molar masses.</p> Signup and view all the answers

<p>All of the above</p> Signup and view all the answers

<p>A reaction in which two or more substances react to form a single substance.</p> Signup and view all the answers

<p>A reaction in which a compound breaks down into two or more simpler substances.</p> Signup and view all the answers

<p>One element takes the place of another element in a compound.</p> Signup and view all the answers

<p>Two different compounds exchange positive ions and form two new compounds.</p> Signup and view all the answers

<p>A substance reacts rapidly with oxygen, producing heat and light.</p> Signup and view all the answers

<p>A reaction in which electrons are transferred from one reactant to another.</p> Signup and view all the answers

<p>Oxidation Is Loss Reduction Is Gain.</p> Signup and view all the answers

<p>A reaction that generally occurs when a metal combines with oxygen.</p> Signup and view all the answers

<p>When an element's atoms gain electrons.</p> Signup and view all the answers

<p>The energy stored in the chemical bonds of a substance.</p> Signup and view all the answers

<p>They involve the breaking of chemical bonds in the reactants and the formation of chemical bonds in the products.</p> Signup and view all the answers

<p>Energy is either released or absorbed.</p> Signup and view all the answers

<p>A chemical reaction that releases energy and warms its surroundings.</p> Signup and view all the answers

<p>It absorbs energy from its surroundings.</p> Signup and view all the answers

<p>False</p> Signup and view all the answers

<p>The rate at which reactants change into products over time.</p> Signup and view all the answers

<p>Temperature, surface area, concentration, stirring, and catalysts.</p> Signup and view all the answers

<p>Increasing the temperature causes particles to move faster and collide more often.</p> Signup and view all the answers

<p>Smaller particle size increases surface area, leading to more collisions.</p> Signup and view all the answers

<p>Stirring increases the exposure of reactants to each other.</p> Signup and view all the answers

<p>Higher concentration means more reacting particles are present, increasing the reaction rate.</p> Signup and view all the answers

<p>A substance that affects the reaction rate without being used up.</p> Signup and view all the answers

<p>A state in which the forward and reverse paths of change occur at the same rate.</p> Signup and view all the answers

<p>Established when a physical change does not go to completion.</p> Signup and view all the answers

<p>Established when a chemical reaction does not go to completion.</p> Signup and view all the answers

<p>Reactions where the conversion of reactants and products can happen simultaneously.</p> Signup and view all the answers