AIDE Physical Science Assignment Guide and Key Points

 

Chapter 6 "How Matter Changes"

 

Lesson 1 "What is a Reaction"

Turn to page 149 look at the picture on those pages read about it and the short introduction to Chapter 6

Visually Scan Pages 150-152; focus on the blue boxes, which contain the key vocabulary terms.

Visually Scan Pages 150-152 for pictures and diagrams, read each of the captions.

Look for and read any little blue boxes on pages 150-152

Read Pages 150-151 (take notes of important ideas)

Do you know the answers to the questions on page 152? (See Key Points below for help)

Do you know the vocabulary words? (See Key Points below for help)

Take the quiz on Lesson 1 "What is a Reaction" (You may use the book, notes and Key Points for help on the quizzes. NOT ON TESTS!)

Review answers on the quiz and print it out. This will be very useful when you are studying for the test.

 

Lesson 1 Key Points

Vocabulary Terms

Chemical reaction - a chemical change in which elements are combined or rearranged.

Mixture - a combination of substances in which no reaction takes place.

dissolve - to break apart.

solute - the substance that is dissolved in a solution

solution - a mixture in which one substance is dissolved in another

Solvent - a substance capable of dissolving one or more other substances.

 

Section Review Answers

  1. The alchemists were trying to produce gold. No, they didn't succeed.
  2. The scientists can heat the substances or mix the substances with water.
  3. Salt is the solute, and water is the solvent.
  4. A chemical reaction is a chemical change in which elements are combined or rearranged.
  5. A mixture is a combination of substances, but no reacting takes place. A chemical reaction is a chemical change in which elements are combined or rearranged.

Did you learn these Objectives?

Can you explain a reaction?

Can you explain the difference between solutions, solutes, and solvents?

 Investigation 6-1 "Separating a Mixture"

Optional, (must complete 3 this quarter)

Gather the materials you need; safety glasses, spoon, 2 g sand, 2g salt, sheet of paper, stirring rod, graduated cylinder, 20ml water, 2 beakers, filter paper, funnel.

substitutes: (around a cup of water if no graduated cylinder, 2 cups instead of 2 beakers.

Follow the procedure on page 73-74.

Complete the follow-up investigation quiz. (The 3 questions will be the same as the three questions on P74)

 

 

Lesson 2 "Using Chemical Equations to Show Reactions"

Visually Scan Pages 155-159; focus on the blue boxes, which contain the key vocabulary terms.

Visually Scan Pages 155-159 for pictures and diagrams, read each of the captions.

Read Pages 155-158 (take notes of important ideas)

Do you know the answers to the questions on page 159? (See Key Points below for help)

Do you know the vocabulary words? (See Key Points below for help)

Take the quiz on Lesson 2 "Using Chemical Equations to Show Reactions" (You may use the book, notes and Key Points for help on the quizzes. NOT ON TESTS!)

Review answers on the quiz and print it out. This will be very useful when you are studying for the test.

 

Lesson 2 Key Points

Vocabulary Terms

Chemical equation - a statement that uses symbols, formulas, and numbers to stand for a chemical reaction.

reactant - a substance that is altered in a chemical reaction.

product - a substance that is formed in a chemical reaction.

Law of Conservation of Matter - matter cannot be created or destroyed in chemical and common physical changes.

Balance - to keep the number of atoms the same on both sides of the equation.

coefficient - a number placed before a formula in a chemical equation.

 

Section Review Answers

  1. A reactants: Fe, S; product: FeS, B reactants: HxSO4, Zn: products: ZnSO4, H2, C reactants: Mg,S; product: MgS, D reactants: AgNO3, NaCl; products: NaNO3, AgCL
  2. A magnesium plus sulfur yields magnesium sulfide. B barium plus sulfur yields barium sulfide.
  3. Na and Cl2
  4. NaCl
  5. Yes, the equation is balanced. For each kind of atom, the number of atoms is the same on the left and on he right side of the equation.

Did you learn these Objectives?

Can you explain how a chemical equation describes a chemical reaction?

Are you able to balance chemical equations?

 

Lesson 3 "Synthesis and Decomposition Reactions"

Visually Scan Pages 160-163; focus on the blue boxes, which contain the key vocabulary terms.

Visually Scan Pages 160-163 for pictures and diagrams, read each of the captions.

Visually Scan for an read the short articles in the blue boxes that you find on Pages 160-163.

Read Pages 160-162 (take notes of important ideas)

Do you know the answers to the questions on page 163? (See Key Points below for help)

Do you know the vocabulary words? (See Key Points below for help)

Take the quiz on Lesson 3 "Synthesis and Decomposition Reactions" (You may use the book, notes and Key Points for help on the quizzes. NOT ON TESTS!)

Review answers on the quiz and print it out. This will be very useful when you are studying for the test.

 

Lesson 3 Key Points

Vocabulary Terms

synthesis reaction - a reaction in which elements combine to form a compound.

decomposition reaction - a reaction in which a compound breaks down into two or more simple substances.

 

 

Section Review Answers

  1. decomposition
  2. synthesis
  3. synthesis
  4. decomposition
  5. decomposition
  6. 2NaCl
  7. mgCl2
  8. CO3
  9. CaO
  10. 2Fe

Did you learn these Objectives?

Can you identify synthesis reactions?

Can you identify decomposition reactions?

 

Lesson 4 "Single-Double-Replacement Reactions"

Visually Scan Pages 164-166; focus on the blue boxes, which contain the key vocabulary terms.

Visually Scan Pages 164-166 for pictures and diagrams, read each of the captions.

Visually Scan for an read the short articles and questions in the blue boxes that you find on Pages 164-166.

Read Pages 164-165 (take notes of important ideas)

Do you know the answers to the questions on page 166? (See Key Points below for help)

Do you know the vocabulary words? (See Key Points below for help)

Take the quiz on Lesson 5 "Single- Double- Replacement Reactions" (You may use the book, notes and Key Points for help on the quizzes. NOT ON TESTS!)

Review answers on the quiz and print it out. This will be very useful when you are studying for the test.

 

Lesson 4 Key Points

Vocabulary Terms

Single-replacement reaction - a reaction in which one element replaces another in a compound.

Double-replacement reaction - a reaction in which the elements in two compounds are exchanged.

Precipitate - a solid that is formed and usually sinks to the bottom of a solution.

 

 

Section Review Answers

  1. double replacement
  2. synthesis
  3. decomposition
  4. single replacement
  5. single replacement
  6. 2NaCl + Br2; single replacement
  7. ZnCl2 + Hx ; single replacement
  8. KBr; double replacement
  9. BaSO4 + 2 NaCl; double replacement
  10. AgBr + NaNO3; double replacement.

Did you learn these Objectives?

Can you identify single-replacement reactions?

Can you identify double-replacement reactions?

Investigation 6-2 "Observing Different Kinds of Reactions"

Optional, (must complete 3 this quarter)

Please contact your instructor if you would like to complete this lab.

 

 Preparing for Chapter 6 Test

Turn to Page 169 and read the Chapter 6 summary.

On pages 170-171 you will find the Chapter 6 review, complete the review.

Check your answers with those in the Key Points.

Take the Chapter 6 Test "How Matter Changes"

Review the answers then print the results for your records.

 

Chapter 6 Review answers

  1. chemical reaction
  2. solution
  3. coefficient
  4. chemical equation
  5. reactant
  6. product
  7. precipitate
  8. solvent
  9. solute
  10. mixture
  11. law of conservation of matter
  12. A (decomposition)
  13. B (double replacement)
  14. C (single replacement)
  15. D (synthesis)
  16. C (single replacement)
  17. In a chemical reaction, elements combine or rearrange. A chemical reaction can happen when substances are heated or when they are mixed with water.
  18. Combing a solute and a solvent results in a mixture in which the solvent cause the solute to dissolve.
  19. 4Al + 3O2--> 2Al2O3; reactants: Al and O2: product:Al2O3
  20. A chemical reaction takes place forming a precipitate as the two liquids are mixed. The clear solution is silver nitrate, the yellow solution is sodium chromate, and the red precipitate is silver chromate.

 

Congratulations you finished the sixth chapter !!