CHEM 121 Study guides, Class notes & Summaries

Title: Quantitative and Qualitative Analysis Purpose: The purpose of this experiment is to learn how to measure the amount of a substance that is present in a chemical compound. A metal carbonate will be analyzed to determine how much CO2 and moles of CO2 are lost. Another experiment will also look into how much water a hydrate loses and determine what type of hydrate it is. Paper chromatography will be used to determine the identity of chemical substances. Lastly, SEM/EDX will be used to d...

Experiment #: 2 Title: Density Determination Purpose: The purpose of this experiment is to learn how to calculate the density of both liquids and solids in the chemistry lab by finding the volume and mass of different substances. Procedure: Density Determination of Water: 1) A graduated cylinder is to be filled with water 2) The temperature is taken using a digital thermometer of the water in the graduated cylinder 3) A value is read and recorded in ºC for the temperature of the water ...

CHEM 121 FINAL EXAM QUESTIONS AND ANSWERS 100% PASS kinetic molecular theory - Correct Answer ️️ -all matter is made of tiny particles that are constantly moving fundamental particle - Correct Answer ️️ -take a macroscopic object and divide it repeatedly. Eventually you have a particle, which, if further divided is no longer the original substance. This smallest piece of the substance is called... h2o molecule - Correct Answer ️️ -the fundamental particle of water is what? at...

Chemistry 121 Exam #1 Questions and Answers 100% Pass Hydroxide - Correct Answer ️️ -OH- Acetate - Correct Answer ️️ -C₂H₃O₂⁻ Nitrate - Correct Answer ️️ -NO₃⁻ nitrite - Correct Answer ️️ -NO₂⁻ Oxide - Correct Answer ️️ -O²⁻ Sulfide - Correct Answer ️️ -S²⁻ Sulfite - Correct Answer ️️ -SO₃²⁻ Sulfate - Correct Answer ️️ -SO₄²⁻ Carbonate - Correct Answer ️️ -CO₃²⁻ Chromate - Correct Answer ️️ -CrO₄²⁻ Dich...

Chemistry 121 Exam 1 Questions and Answers 100% Correct What are the three states of matter? - Correct Answer ️️ -solid, liquid and gas ___ is the study of properties and behavior of matter. - Correct Answer ️️ -chemistry ___ is the physical material of the universe. It is also anything the has mass and occupies space. - Correct Answer ️️ -matter __ is matter that is made up of one "thing" - Correct Answer ️️ -pure substance __ is a mixture that doesn't have the same co...

CHEM 121 FINAL EXAM QUESTIONS AND ANSWERS 100% PASS kinetic molecular theory - Correct Answer ️️ -all matter is made of tiny particles that are constantly moving fundamental particle - Correct Answer ️️ -take a macroscopic object and divide it repeatedly. Eventually you have a particle, which, if further divided is no longer the original substance. This smallest piece of the substance is called... h2o molecule - Correct Answer ️️ -the fundamental particle of water is what? at...

Chemistry 121 Exam #1 Questions and Answers 100% Pass Hydroxide - Correct Answer ️️ -OH- Acetate - Correct Answer ️️ -C₂H₃O₂⁻ Nitrate - Correct Answer ️️ -NO₃⁻ nitrite - Correct Answer ️️ -NO₂⁻ Oxide - Correct Answer ️️ -O²⁻ Sulfide - Correct Answer ️️ -S²⁻ Sulfite - Correct Answer ️️ -SO₃²⁻ Sulfate - Correct Answer ️️ -SO₄²⁻ Carbonate - Correct Answer ️️ -CO₃²⁻ Chromate - Correct Answer ️️ -CrO₄²⁻ Dich...

Chemistry 121 Exam 1 Questions and Answers 100% Correct What are the three states of matter? - Correct Answer ️️ -solid, liquid and gas ___ is the study of properties and behavior of matter. - Correct Answer ️️ -chemistry ___ is the physical material of the universe. It is also anything the has mass and occupies space. - Correct Answer ️️ -matter __ is matter that is made up of one "thing" - Correct Answer ️️ -pure substance __ is a mixture that doesn't have the same co...

Experiment #: 6 Title: Equilibrium Reactions Purpose: To study equilibrium reactions with two experiments 1. Determine the equilibrium constant Kc and 2. Study LeChatelier’s Principle Procedure: 1. Add 10mL acetic acid and 10mL propyl alcohol in a small flask using a pipette. Mix well 2. Take 1mL pipette sample from flask and place in beaker. Add in about 25mL of water and a few drops of phenolphthalein indicator. 3. Titrate with sodium hydroxide in buret until color change. Record mL ...

Title: Bonding and Properties Purpose: Study the infrared spectra and physical properties of molecules to determine what kinds of intra-molecular bonds are present within the molecules and what kinds of intermolecular bonds are present between the molecules. Procedure: 1. Add potassium chloride (ionic) to water in a test tube. Shake tube so potassium chloride dissolves. 2. Add pentate to test tube of water. Shake to see if it dissolves in the water. 3. Add normal propyl chloride to test t...