Unit 7 Molar Relationships Presentation Part 1

Open Ended

What are the 7 diatomic atoms you MUST KNOW?

Open Ended

What did the three things from the DO NOW have in common?

Multiple Choice

Which of the following is NOT a way to measure the amount of matter?

• Counting the number of items

• Measuring the mass or weight

• Measuring the volume

• Measuring the temperature

Multiple Select

Select all the correct ways to quantify a dozen apples based on the information provided.

• By count: 1 dozen = 12 apples

• By mass: 1 dozen = 2.0 kg apples

• By volume: 1 dozen apples = 0.20 bushel apples

• By color: 1 dozen apples = 6 red, 6 green

Fill in the Blanks

Fill in the blank: The method used to convert among count, mass, and volume of matter is called

.

Open Ended

Dimensional analysis is a method for converting units or dimensions. What are two important rules to follow when performing dimensional analysis?

Open Ended

List the steps involved in performing dimensional analysis as described in the lesson.

Fill in the Blanks

What is the mass of 90 average-sized apples if 1 dozen apples has a mass of 2.0 kg?

(Include number and unit for answer (Not the object))

Open Ended

Why is it easier to count eggs when they are grouped into dozens, and how does this concept relate to counting grains of sand or molecules?

Fill in the Blanks

Fill in the blank: The SI unit for measuring the amount of a substance is the

.

Multiple Choice

Which of the following is the correct value for Avogadro's number?

• 6.02 x 10^23

• 1.00 x 10^6

• 3.14 x 10^8

• 9.81 x 10^2

Multiple Choice

Which of the following pairs correctly matches the substance with its representative particle?

• Molecular Compounds - Atom

• Ionic Compounds - Formula Units

• Elements - Molecule

• Molecular Compounds - Formula Units

Multiple Choice

Based on the Video: 

A scientist wants to demonstrate the immense scale of Avogadro's number. Which of the following analogies BEST illustrates the magnitude of a mole?

• If a mole of pennies were stacked, they would reach the moon

• f a mole of basketballs were created, they would form a new planet the size of Earth

• If a mole of donuts were laid out, they would cover Antarctica

• If a mole of grains of sand were counted, they would fill a standard swimming pool

Multiple Choice

Based on the Video: 

Why did Avogadro's original hypothesis about equal volumes of gases containing equal numbers of particles initially fail to gain scientific acceptance?

• His mathematical calculations were incorrect

• Most scientists did not yet accept the concept of atoms

• He lacked experimental evidence to support his claim

• The technology to verify his hypothesis did not exist

Multiple Choice

Based on the Video: 

The concept of a "mole" in chemistry is similar to all the follwoing everyday measurement concept except?

• A baker's dozen, which represents 13 items

• A gross, which represents 104 items

• A dozen, which represents 12 items

• A ream of paper, which represents 500 items

Multiple Choice

What is the mathematical relationship used to convert representative particles to moles?

• moles = rep. particles x (1 mole / 6.02 x 10^23 rep. particles)

• moles = rep. particles x (6.02 x 10^23 rep. particles / 1 mole)

• moles = rep. particles / 1 mole

• moles = rep. particles x (1 mole / 1 rep. particle)

Fill in the Blanks

How many moles of magnesium (Mg) are present in 1.25 x 10^23 atoms of Mg?

(Include number and unit for answer (Not the element))

Multiple Choice

Which of the following are necessary steps to solve for the number of moles when given the number of representative particles?

• Divide the number of particles by Avogadro's number

• Multiply the number of particles by Avogadro's number

• Add the number of particles to Avogadro's number

• Subtract Avogadro's number from the number of particles

Fill in the Blanks

How many moles is 6.27 x 10^24 molecules of bromine?

(Include number and unit for answer (Not the element))

Fill in the Blanks

How many moles is 2.80 x 10^24 atoms of silicon?

(Include number and unit for answer (Not the element))

Multiple Choice

Which of the following is the correct formula to convert moles to representative particles?

• rep. particles = moles x (6.02 x 10^23 rep. particles / 1 mole)

• rep. particles = moles x (1 mole / 6.02 x 10^23 rep. particles)

• rep. particles = moles / (6.02 x 10^23 rep. particles)

• rep. particles = moles x (1 mole / 1 rep. particle)

Fill in the Blanks

How many molecules are in 7.72 mol of NO2?

(Include number and unit for answer (Not the element) and us (^) before an exponet)

Multiple Choice

Which of the following are necessary steps to solve for the number of representative particles when given the number of moles?

• Divide the number of moles given by 1 mole

• Multiply the number of moles given by 1 mole

• Add the number of moles given to 1 mole

• Subtract 1 mole from the number of moles given

Fill in the Blanks

Propane is a gas for cooking and heating. How many atoms are in 2.12 mol of propane, C3H8?

(Include number and unit for answer (Not the element) and us (^) before an exponet)

Fill in the Blanks

How many formula units are in 27.2 moles of NaCl?

(Include number and unit for answer (Not the element) and us (^) before an exponet)