Download New CHEM 120 Unit 2 Labs: OL Lab 3 and OL Lab 4

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Download New CHEM 120 Unit 2 Labs OL Lab 3 and OL Lab 4

 

CHEM 120 Unit 2 Lab: OL Lab 3: Periodic Table of Elements

Learning Objectives:

  • Describe the structure and organization of the periodic table
  • Classify elements of a family based on their location in the periodic table
  • Distinguish metals from other element classes based on typical characteristics
  • Use the flame color test to identify metals based on their position in the periodic table
  • Explain valence electrons and oxidation state of the main group element to its position in the periodic table
  • Describe the main trends among groups and periods for atomic properties
  • Explain the causes on the atomic level for the main trends among groups and periods concerning atomic radii, ionization energy, and electronegativity

Introduction
Light up the elements! In this simulation, you will learn all the fundamental ins and outs of the periodic table. Find out which elements have metallic characteristics, perform a flame test, and explore trends in atomic properties among the main groups and periods.

A broken table
A periodic table is an amazing tool for getting an overview of all the elements in existence, even the elements that only exist when we create them ourselves. But the table in this virtual lab is broken; some of the elements have fallen out, and it’s your mission to figure out where they belong by investigating their characteristics and properties.

Flame color test and atomic properties
To sort the first few elements in the table you can observe their flame colors. You may need to use your knowledge about element classes as well to get the full understanding.

There are surprisingly many atomic properties for which trends can be observed via the periodic table. Moving on to the virtual holo-table, you will investigate these trends and deduct how they behave when you move within and between periods and groups of the table. You will need this knowledge to assign the most tricky fallen-out elements.

Become the teacher
At the end of the simulation, a special visitor will be coming by the lab, and she needs you to help her understand the basics of the periodic table.

Part 1: Complete Labster Lab: Periodic Table of Elements: Get the table organized in time!

Part 2: Report and Reflection
Purpose:
Describe in complete sentences and in your own words, the purpose of this experiment.

Observations: Record three observations from the simulation.

Answer the questions below:

  1. For each of the following elements, give another element in the same family. (2 points)
  2. In your own words, describe the terms below:
  3. Reflection: Consider what you learned from this simulation. Reflect on three to four key concepts that you learned in this lab exercise. How could the lessons learned in this virtual lab relate to a real-world situation in the community/world or your future career? Be specific in your answer (this should require 5-10 sentences).

CHEM 120 Unit 2 Lab: OL Lab 4; Ionic and Covalent Bonds

Learning Objectives

  • Describe the formation of ionic and covalent bonds
  • Identify anions and cations
  • Apply the octet rule
  • Describe the ionic lattice structure
  • Draw Lewis dot structures
  • Explain the formation of single, double, and triple bonds
  • Distinguish between ionic compounds and covalent compounds

Introduction
Have you ever wondered how atoms are held together? In this simulation, you will learn the basics about atomic bonding in ionic and covalent compounds, and how to distinguish those compounds experimentally. With all this knowledge, you will help your friend analyze two mysterious substances he received from an alchemist. By testing their specific physical properties, you’ll be able to identify the nature of the substances. Finally, you will learn how ions form lattice structures and how this influences the property of a compound.

Test solubility and conductivity

Atoms can interact in many different ways, creating new compounds with unique properties. In the first mission of the Ionic and Covalent Bonds simulation, your task is to choose appropriate laboratory equipment to test the solubility and conductivity of the two substances. You will explore how these properties differ in ionic and covalent compounds.

Draw Lewis dot structures

In the second part of the Ionic and Covalent Bonds simulation, you will learn about the octet rule and how to apply this to building Lewis dot structures in a virtual drawing activity. You will see that there are many ways that covalent bonds can be formed, depending on the compound and electron configuration. You will also learn how to identify lone-pair electrons in a covalent bond.

Determine melting points

In the last mission, your task is to determine the melting point of the two substances by using a melting point apparatus. You will explore how your results are connected to the ability of ions to form a lattice structure.

Part 1: Complete Labster Lab Ionic and Covalent Bonds

Part 2: Report and Reflection

Purpose: Describe in complete sentences and in your own words, the purpose of this experiment.

Observations: Record three observations from the simulation.

Answer the questions below:

  1. In your own words, explain the terms below:
  2. For each of the below, predict the expected ion each could become by giving the charges.
  3. For each of the molecules below, determine what molecular shape you would expect.
  4. Reflection: Consider what you learned from this simulation. Reflect on three to four key concepts that you learned in this lab exercise. How could the lessons learned in this virtual lab relate to a real-world situation in the community/world or your future career? Be specific in your answer (this should require 5-10 sentences).

Want Assistance with the Labs?

 

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