25-26 Unit 7 Lesson 4: Quiz 1 and mole foldable

Friday: Unit 7 Stoichiometry Quiz 1

Announcements/Reminders

Agenda:

​

• Phones up! Check your number!

• Friday 1/16- Quiz 2: gram to gram and limiting reactants

• 1/19- no school, MLK day

• Thursday 1/22- Unit 7 test

• Friday 1/30 PLD

• Review

• Quiz: Quiz is all on paper. 

  • Balancing equations

  • calculating molar mass

  • converting from grams to moles and moles to grams (using molar mass)

  • converting from moles to moles (using mole ratio)

Bellwork:

1) Take out: calculator, pencil, packet
2) Learning check 7.4 on formative

Home work:

1) edpuzzle due Sunday
2) finish mole foldable​​

Multiple Choice

Mole ratios are obtained from the

• balanced chemical equation

• periodic table

• molar mass

Fill in the Blanks

2 Al  +     6 HCl  🡪   2 AlCl₃ +    3 H₂

How many moles of HCl are needed to react with 2 moles of Al?

Multiple Choice

To convert between moles and grams of the same substance, you use:

• balanced chemical equation

• mole ratio

• molar mass

• atomic number

Multiple Choice

To convert from moles A to moles B ( between 2 different substances) you use:

• atomic mass

• mole ratio

• molar mass

• atomic number

Fill in the Blanks

2 Al  +     6 HCl  🡪   2 AlCl₃ +    3 H₂

How many moles of HCl are needed to react with 2 moles of Al?

Use the equation to answer the following questions:
2 Al  +     6 HCl  🡪   2 AlCl₃ +    3 H₂

1) Calculate the molar mass of HCl



2) How many moles are in 25 g HCl?

3) Calculate the molar mass of AlCl₃



4) How many grams are in 2.5 mol of AlCl₃?

5) How many moles of H₂ are produced when 5 moles of HCl are reacted with excess Al?



6) How many moles of H₂ are produced when 5 moles of Al are reacted with excess HCl?

Quiz Day protocol

• Quiz is on paper: NO CHROMEBOOKS

• No phones, smartwatches or airpods/headphones. These need to be in your numbered pouch at the front of the room. You will receive a zero on the quiz/test if you do not follow this rule.

• Eyes on your own paper. If I see you looking at someone else's quiz, you will receive a zero on the quiz.

• No leaving the classroom. If you need to use the bathroom (unless it is an absolute emergency) or get a drink, do so BEFORE or AFTER class.

• No talking. Even if you finish before others, still no talking, or you will receive a zero on the quiz/test.

• When you finish, use the pictures below to make your MOLE FOLDABLE