Topic 3 - Chemical Reactions

Unit 3 Vocabulary and Definitions

Unit 3 Vocabulary Slides and Pictures

Quizlet Review

1. How can data about the characteristic physical and chemical properties of substances be used to identify whether a physical or chemical change has occurred?

2. What factors affect the rate at which a chemical change occurs?

3. How can  a model be used to demonstrate the reactants and products of a chemical reaction?

4. How can a chemical equation be used to model the conservation of mass?

5. How are matter and energy conserved during cellular respiration and photosynthesis?

Counting Compounds

Counting Atoms

Unit 3 Comprehensive Notes

Find the Missing Mass

Balancing Modeled Equations

Balancing Chemical Equations

E. Atoms and molecules

• 2 How are substances represented by chemical formulas and models?

• 3 Identify chemical formulas for ball-and-stick models

• 4  Describe the atomic composition of molecules

F. Chemical reactions

• 1 Identify reactants and products

• 2 Count atoms and molecules in chemical reactions

• 3 Calculate amounts of reactants or products in chemical reactions

• 4 Describe energy changes in chemical reactions

• 5 Compare physical and chemical changes

• 6 Explore chemical structure and properties: soapmaking

• 7 Explore chemical structure and properties: food flavors

• 8 Synthetic materials

Lesson 1 - pgs 82-92

• physical and chemical changes

• reactants and products

• chemical bonding

• evidence of chemical reactions

• exothermic vs endothermic

• rates of reactions

Lesson 2 - pgs 94-101

• chemical equation structure (products, reactants, yields, subscript, coefficient)

• Law of Conservation of Mass

• open and closed systems

• types of reactions (synthesis, decomposition, replacement)

Lesson 3 - pgs 102-109

• photosynthesis 

• cellular respiration

Unit 3 Study Guide

Study Guide Answers

Wayground (3 opportunities)