Name: Date: Student Exploration: Moles Vocabulary: atomic mass, Avogadro constant, conversion factor, dimensional analysis, mole, molar mass, molecular mass, scientific notation, significant figures, ... unified atomic mass unit Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. In the image to the right, note a dozen eggs, a dozen donuts and a dozen roses. How many of each item do you have? 2. Would a dozen of each object have the same mass? 3. Suppose you have a dozen carbon atoms, a dozen gold atoms, and a dozen iron atoms. Even though you have the same number of each, would you expect them all to have the same mass? Explain. Gizmo Warm-up When counting roses, eggs, or donuts, a dozen is a good unit to use. If you are counting atoms, however, a dozen is not much help. In the Moles Gizmo, you will learn about a unit used to count atoms. On the AVOGADRO CONSTANT tab, place the copper (Cu) atom on the nano-balance on the left, which will show the average atomic mass of copper rather than the mass of a single copper atom. 1. What is the average mass of a copper atom? The unit “u” refers to unified atomic mass units. A single proton or neutron has a mass of approximately one atomic mass unit. (Officially, 1 u is one-twelfth the mass of a C-12 atom.) 2. To gain an idea as to how many atoms are in a gram or so of copper, use the larger balance on the right. Press Add atoms to put a scoop of atoms in the weighing dish, and keep adding until the balance registers between 1 and 2 grams. If you don’t seem to be making much progress, adjust the exponent using the slider, which will make the scoop size bigger. How many atoms did you need to add? Bailey Sage 10-13-19 12 no No I would not expect them to have the same mass because they are made different atoms. 63.546 u 1.01 x 10 Activity A: Molar Mass Get the Gizmo ready: Select the AVOGADRO CONSTANT tab. Turn on Show hints and check that Copper (Cu) is selected. Introduction: Since atoms are so tiny, chemists have devised a unit known as the mole. A mole represents a macroscopic quantity of matter that can be used in the laboratory. One mole of any element has the same mass in grams as its atomic mass in u. Question: How many particles are in a mole? 1. Explore: Note the average atomic mass of copper on the nano-balance. Add atoms to the larger balance until it registers the same number (in g) as the reading on the nano-balance (in u). Use the Exponent slider to help get the correct amount. Stop adding atoms when the readings on both balances match exactly (to the nearest 0.001 g). How many atoms did you need to add? 2. Explore: Repeat the same procedure with carbon, then sulfur and aluminum. A. For each element, how many atoms did you need to add? B. What do you notice about the number of atoms in one mole? 3. Discover: In each case, you measured out one mole of atoms, since the mass of one mole of any element, in grams, is equal to its atomic mass, in u. One mole of any element contains the same number of atoms, a number known as the Avogadro constant. What is the exact value of the Avogadro constant? 4. Illustrate: The Avogadro constant is so large it is normally written in scientific notation. To get an idea of the enormity of the Avogadro constant, write it out in standard form. (You will need to move the decimal place to the right 23 times, so you will need to add a lot of zeros!) 5. Compare: While the number of atoms in a mole is constant, the number of grams in a mole changes based on the element. The number of grams in a mole (g/mol) is known as its molar mass, and has the same numerical value as an element’s atomic mass (in u). Use the Gizmo to find the atomic and molar mass of the following elements. Use proper units. S: Atomic mass Molar mass Al: Atomic mass Molar mass (Activity A continued on next page) [Show More]

Last updated: 3 months ago

Preview 1 out of 7 pages

(BUNDLE) Gizmos | STEM Simulations & Virtual Labs -ANSWER KEYS

By Academia1434 3 months ago

**$90**

57

Physics> GIZMOS > Student Exploration: Moles Vocabulary: atomic mass, Avogadro constant, conversion factor, dimensional analysis, mole, molar mass, molecular mass, scientific notation, significant figures, unified atomic mass unit (All)

Student Exploration: Moles Vocabulary: atomic mass, Avogadro constant, conversion factor, dimensional analysis, mole, molar mass, molecular mass, scientific notation, significant figures, unified...

By Professor Lynne , Uploaded: Oct 07, 2021

**$7.5**

Chemistry> GIZMOS > Student Exploration: Moles Gizmos (All)

Name: Date: LAB#5 Moles Gizmos Student Exploration: Moles Directions: Follow the instructions to go through the simulation. Respond to the questions and prompts in the orange boxes. Vocabulary...

By lordgizmo , Uploaded: Aug 16, 2021

**$6.5**

Chemistry> GIZMOS > Gizmos -Bailey Sage Student Exploration: Moles Latest Updated Solutions Download to score an A (All)

Gizmos -Bailey Sage Student Exploration: Moles Latest Updated Solutions Download to score an A Gizmos -Bailey Sage Student Exploration: Moles Latest Updated Solutions Download to score an AGizmos -Ba...

By VERIFIED A+ , Uploaded: Jun 22, 2021

**$13**

Chemistry> GIZMOS > Gizmos -Bailey Sage Student Exploration: Moles (Download to score an A) 2019 (All)

Name: Date: Student Exploration: Moles Vocabulary: atomic mass, Avogadro constant, conversion factor, dimensional analysis, mole, molar mass, molecular mass, scientific notation, significant figures,...

By jakesuli , Uploaded: Jun 17, 2021

**$14**

Chemistry> GIZMOS > STUDENT EXPLORATION: MOLES 2021 GIZMOS LAB SOLUTIONS, (All)

STUDENT EXPLORATION: MOLES 2021 GIZMOS LAB SOLUTIONS,

By Hannington , Uploaded: Jun 10, 2021

**$7**

Chemistry> GIZMOS > Student Exploration: Moles GIZMO ( ALL ANSWERS CORRECT ) (All)

Student Exploration: Moles Vocabulary: atomic mass, Avogadro constant, conversion factor, dimensional analysis, mole, molar mass, molecular mass, scientific notation, significant figures, unified at...

By Cheryshev , Uploaded: May 21, 2021

**$9**

Chemistry> GIZMOS > Student Exploration: Moles (All)

Student Exploration: Moles Vocabulary: atomic mass, Avogadro constant, conversion factor, dimensional analysis, mole, molar mass, molecular mass, scientific notation, significant figures, unified at...

By Bestanalytic , Uploaded: May 20, 2021

**$13.5**

Chemistry> GIZMOS > Gizmos_Student Exploration: Moles 2020 | Gizmos_Student Exploration: Moles_Graded A (All)

Name: Date: Student Exploration: Moles Directions: Follow the instructions to go through the simulation. Respond to the questions and prompts in the orange boxes. Vocabulary: atomic m...

By Elli , Uploaded: Apr 03, 2021

**$11.5**

Chemistry> GIZMOS > Student Exploration Density Laboratory GIZMOs Answer Key [TOP RATED] (All)

Student Exploration: Density Laboratory Vocabulary: buoyancy, density, graduated cylinder, mass, matter, scale, volume

By jakesuli , Uploaded: Jul 19, 2021

**$9**

Botany> GIZMOS > Student Exploration, Seed Germination. Gizmos (All)

Prior Knowledge Question (Do this BEFORE using the Gizmo.) Plants that produce fruit or vegetables grow from seeds. Suppose you want to start a vegetable garden using seeds. How could you get the se...

By QuizGuider82 , Uploaded: Jul 18, 2021

**$9**

Connected school, study & course

**About the document**

Uploaded On

Jun 17, 2021

Number of pages

7

Written in

This document has been written for:

Uploaded

Jun 17, 2021

Downloads

0

Views

56

Avoid resits and achieve higher grades with the best study guides, textbook notes, and class notes written by your fellow students

Your fellow students know the appropriate material to use to deliver high quality content. With this great service and assistance from fellow students, you can become well prepared and avoid having to resits exams.

Your fellow student knows the best materials to research on and use. This guarantee you the best grades in your examination. Your fellow students use high quality materials, textbooks and notes to ensure high quality

Get paid by selling your notes and study materials to other students. Earn alot of cash and help other students in study by providing them with appropriate and high quality study materials.

In Browsegrades, a student can earn by offering help to other student. Students can help other students with materials by upploading their notes and earn money.

We're available through e-mail, Twitter, Facebook, and live chat.

FAQ

Questions? Leave a message!

Copyright © Browsegrades · High quality services·