PreparED Study Materials
Videos
Sketching Lewis Structures: Radical Species ClF? and BrO? Explained
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This video elucidates the method to sketch Lewis structures for the radical species ClF? and BrO?. Highlighting the distinguishing feature of an unpaired electron, we illustrate the bond arrangements and lone pairs that define these unique chemical entities.
Volume of 49.8g HCl Gas at STP: Finding the Answer in Liters
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This video guides viewers through the process of calculating the volume occupied by Hydrochloric acid gas or HCl at standard temperature and pressure. Using the molar mass of HCl and its properties as an ideal gas the tutorial comprehensively explains each step to determine the volume from a given mass at STP. A must-watch for understanding gas volume conversions in chemistry
Protons reveal electron count in atoms. Which statement applies?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
In this video, we explore the information that knowledge of the number of protons in a neutral element's atom can provide. Options for determining neutron count, electron count, and identifying the element's name are examined, with a conclusion that it allows us to know both the number of electrons and the element's name.
Why is the study of chiral molecules important in biochemistry?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This discussion highlights the significance of studying chiral molecules in biochemistry, emphasizing their impact on biological activity, molecular recognition, pharmacokinetics, and biomedical research, without revealing specific examples or findings.
Oxidizing & Reducing Agents: Electron Exchange Demystified
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the world of oxidizing and reducing agents in chemistry. Gain a clear understanding of what they are and how they function without delving too deep into the subject matter.
Classifying the Boiling of Water: Physical or Chemical Change? Justify
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This video tackles the classification of boiling water as either a physical or chemical change, examining the provided options. We conclude that boiling is a physical change, as the water's chemical composition remains the same during the transition from liquid to gas.



















