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The BRAT Principle: Pathway to Success in GB1

  • Be Open: Embrace new ways of doing things.

  • New Study Habits: Develop effective study techniques; consider lecture repetition.

    • Lecture Repetition: Reinforce learning by hearing the same information from various sources.

    • Resources:

      • Textbook

      • BioBytes

      • Ask and answer questions

      • BioWrap

      • SI sessions

Consultation and Study Strategies

  • Study Partner/Group: Collaborate with peers to enhance understanding.

  • Track Academic Performance: Monitor progress to identify areas needing attention.

  • Incremental Study Approach: Study in increments—no more than 2 modules at a time to improve retention.

  • Sample Study Plan for GB1:

    • Consider commitments and revise study plans during exam week.

    • Example Plan:

      • Mon: BioBytes, Attend class, Read textbook chapter.

      • Tue: Attend lecture, Read textbook chapter.

      • Wed: BioBytes, Review previous slides.

      • Thu: Attend lecture and additional study time.

      • Fri: BioWrap sessions, review slides.

      • Sat: Read textbook chapter, study time.

      • Sun: Chores and break.

  • Engagement: Simply reading slides isn’t sufficient; understanding and engagement are crucial.

Practice Learning Techniques

  • Practice Cause and Effect:

    • Level 3: Answer BioWrap; find processes in the textbook and lecture slides, predict effects.

    • Level 2: Test understanding of concepts.

    • Level 1: Define and describe terminology using flashcards.

Properties of Atoms, Ions, and Molecules

  • Matter: Substances that occupy space and have mass.

  • Elements: Cannot be broken down into smaller substances; pure forms of matter with specific properties.

  • Example of Essential Elements in the Human Body:

    • Main Elements: Approximately 96% of body mass comprised of Oxygen, Carbon, Hydrogen, and Nitrogen.

    • Essential Minerals: 8 elements make up around 3%; include Chlorine, Iron, etc.

    • Trace Elements: Form less than 1% of body mass, very small quantities.

  • Basics of Atoms:

    • Smallest unit of matter retaining chemical properties.

    • Composed of protons, neutrons, and electrons.

Understanding Atomic Structure

  • Atom Components:

    • Nucleus: Contains positively charged protons and neutrons (neutral).

    • Electrons: Negatively charged particles orbiting the nucleus.

  • Atomic Mass: Important for preparing lab reagents and medications.

  • Calculating Atomic Mass: Sum of protons and neutrons; electrons excluded as negligible.

  • Avalogadro’s Number: To find moles of an element, use the atomic mass divided by Avogadro’s number.

Isotopes and Their Implications

  • Isotopes: Variants of elements that have the same number of protons but different numbers of neutrons.

    • Examples include Carbon-12, Carbon-13, Carbon-14 (stable and radioactive).

  • Carbon Dating: Used for determining the age of organic materials.

Bohr Model of the Atom

  • Electrons inhabit defined shells around the nucleus.

  • Shells can house specific numbers of electrons (1: 2, 2: 8, etc.).

  • Octet Rule: Atoms are more stable energetically when they possess eight electrons in their valence shell.

Chemical Bonds: Ionic and Covalent

  • Ionic Bonds: Formed between ions of opposite charges (metal cation and nonmetal anion).

    • Example: Sodium (Na) loses an electron to become Na+.

  • Covalent Bonds: Occur when atoms share electrons.

    • Example: Two Hydrogen atoms share electrons to form H2.

Summary of Compounds and Types

  • Compounds: Can be ionic or covalent, consisting of at least two atoms.

  • Molecules: Chemical structure holding atoms together via chemical bonds.