Moles and Molecules in Chemistry

Moles and Molecules in Chemistry

Assessment

Interactive Video

Chemistry, Mathematics, Science

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial covers the process of converting grams to moles, moles to molecules, and molecules to atoms. It begins with an introduction to the concept of conversions, followed by a detailed calculation of converting 78.9 grams of glucose to moles. The tutorial then explains how to convert moles to molecules using Avogadro's number and concludes with converting molecules to atoms of oxygen, emphasizing the importance of understanding subscripts in chemical formulas.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the first step in converting grams of a substance to moles?

Determine the number of molecules.

Calculate the molecular weight.

Use Avogadro's number.

Find the number of atoms.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many grams are in one mole of glucose (C6H12O6)?

180 grams

78.9 grams

6.02 grams

12 grams

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the result of converting 78.9 grams of glucose to moles?

6 moles

2.8 moles

1.58 moles

0.438 moles

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What constant is used to convert moles to molecules?

Planck's constant

Faraday's constant

Avogadro's number

Boltzmann's constant

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How many molecules are in 0.438 moles of glucose?

6.02 x 10^23 molecules

3.0 x 10^23 molecules

1.58 x 10^24 molecules

2.8 x 10^23 molecules

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to write out 'molecule' instead of using an abbreviation?

There is no standard abbreviation for 'molecule'.

It helps in understanding the concept better.

It is required by Avogadro's law.

It is a rule in chemistry.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the next step after converting moles to molecules?

Convert molecules to atoms.

Convert molecules to ions.

Convert molecules to grams.

Convert molecules to liters.

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