Lesson 1 Reading Guide - KC Understanding Chemical Reactions What are some signs that a chemical reaction might have occurred? What happens to atoms during a chemical reaction? What happens to the total mass in a chemical reaction? Lesson 1 Reading Guide - KC

Lesson 1 Reading Guide - Vocab Understanding Chemical Reactions chemical reaction chemical equation reactant product law of conservation of mass coefficient Lesson 1 Reading Guide - Vocab

A chemical reaction is a process in which bonds break and atoms rearrange, forming new bonds. Lesson 1 - VS

A chemical equation uses symbols to show reactants and products of a chemical reaction. Lesson 1 - VS

The mass and the number of each type of atom do not change during a chemical reaction. This is the law of conservation of mass. Lesson 1 - VS

Which term refers to a description of a reaction using element symbols and chemical formulas? A. chemical equation B. chemical reaction C. coefficient D. subscript Lesson 1 – LR1

What are substances produced by a chemical reaction called? A. reactants B. products C. element D. coefficient Lesson 1 – LR2

What is conserved when mass is conserved in a reaction? A. substances B. products C. coefficients D. atoms Lesson 1 – LR3

Lesson 2 Reading Guide - KC Types of Chemical Reactions How can you recognize the type of chemical reaction by the number or type of reactants and products? What are the different types of chemical reactions? Lesson 2 Reading Guide - KC

Lesson 2 Reading Guide - Vocab Types of Chemical Reactions synthesis decomposition single replacement double replacement combustion Lesson 2 Reading Guide - Vocab

Chemical reactions are classified according to patterns seen in their reactants and products. Lesson 2 - VS

In a synthesis reaction, there are two or more reactants and one product. A decomposition reaction is the opposite of a synthesis reaction. Lesson 2 - VS

In replacement reactions, an element, or elements, in a compound is replaced with another element or elements. Lesson 2 - VS

What term describes a type of chemical reaction in which two or more substances combine and form one compound? A. single-replacement B. double-replacement C. combustion D. synthesis Lesson 2 – LR1

In which type of chemical reaction does a substance combine with oxygen and release energy? A. synthesis B. combustion C. single-replacement D. double-replacement Lesson 2 – LR2

Which term refers to a chemical reaction in which the negative ions in two compounds switch places, forming two new compounds? A. double-replacement B. single-replacement C. decomposition D. synthesis Lesson 2 – LR3

4. Water can be broken down into simpler substances. Do you agree or disagree? 3. Reactions always start with two or more substances that react with each other. 4. Water can be broken down into simpler substances. Lesson 2 - Now

Lesson 3 Reading Guide - KC Energy Changes and Chemical Reactions Why do chemical reactions always involve a change in energy? What is the difference between an endothermic reaction and an exothermic reaction? What factors can affect the rate of a chemical reaction? Lesson 3 Reading Guide - KC

Lesson 3 Reading Guide - Vocab Energy Changes and Chemical Reactions endothermic exothermic activation energy catalyst enzyme inhibitor Lesson 3 Reading Guide - Vocab

Which term refers to a number placed in front of an element symbol or chemical formula in an equation? A. subscript B. reactant C. product D. coefficient Chapter Review – MC1

Which term refers to the substances produced by a chemical reaction? A. reactants B. products C. elements D. atoms Chapter Review – MC2

What can be changed when balancing a chemical equation? A. coefficients B. elements C. subscripts D. superscripts Chapter Review – MC3

In what type of chemical reaction does one compound break down and form two or more substances? A. combustion B. decomposition C. synthesis D. double-replacement Chapter Review – MC4

Which term refers to the type of chemical reaction that absorbs thermal energy? A. endothermic B. exothermic C. double-replacement D. single-replacement Chapter Review – MC5

Which term refers to a process in which atoms of one or more substances rearrange to form one or more new substances? A. chemical equation B. chemical reaction C. combustion D. coefficient Chapter Review – STP1

Which rearranges when chemical bonds between atoms break? A. atoms B. ions C. products D. reactants Chapter Review – STP2

In which type of chemical reaction does one element replace another element in a compound? A. single-replacement B. double-replacement C. synthesis D. combustion Chapter Review – STP3

Which term refers to a substance that increases reaction rate by lowering the activation energy of a reaction? A. catalyst B. enzyme C. inhibitor D. product Chapter Review – STP4

Which describes a catalyst that speeds up chemical reactions in living cells? A. enzyme B. inhibitor C. particle D. reactant Chapter Review – STP5