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Intro to Biology dlh

Chapter 1&2

QuestionAnswer
What makes up the Six Kingdoms? 1. Archaea (single celled) 2. Bacteria (single celled) 3. Protista(single celled) 4. Fungi (single celled) 5. Plantae (many cells) 6. Animalia (many cells)
What do LIVING things have in common? 1. Cellular organization 2. Energy Utilization 3. Maintaining Homeostasis 4. Growth, Development, and Reproduction 5. Heredity
Define Hypothesis; A tentative explanation for a set of facts.
Define Theory: A body of INTERCONNECTED CONCEPTS SUPPORTED BY inductive reasoning (TESTS) and EVIDENCE that explains the facts in a general area of study.
To a scientist a theory is a: Solid conclusion.
What is Matter? Any substance that has mass and occupies space.
What is the smallest particles of matter? an atom
What are Subatomic Particles? Protons and Neutrons
What kind of charge does a Proton have? Positive
What kind of charge does a Neutron have? Neutral (no charge)
What kind of charge does an Electron have? Negative
What is an Atomic Number? Number of Protons in a Nucleus
What is Atomic mass? The number of Protons Plus the Number of Neutrons (P+N=Atomic mass)
What is an Isotope? Same Number of Protons in the nucleus but a DIFFERENT Number of neutrons
What are 2 ways an Ion is Made? 1. Atom gains an electron 2. Atom loses an electron
What is a Ion? Atom in which the number of protons is NOT equal to the number of electrons
what is a Anion? Ion with negative charge (gained one or more electrons)
What is a Cation? Ion with positive charge (lost one or more electrons)
Does a Cation and a Anion attract or push away? They attract.
Are Orbitals that are CLOSE to the Nucleus High in energy or Low in energy?Explain. Low (the closer to the nucleus a orbital is the lower the energy level)
Are Orbitals that are FAR from the nucleus High in energy or Low in energy? Explain. High (The farther the orbital is from the nucleus the higher the energy level)
What do atoms "want" for their orbitals? Electrons in all available orbitals at each energy level
What are the BIG FOUR elements? How many covalent bonds are in each element? Hydrogen (1 covalent bond) Oxygen (2 covalent bonds) Nitrogen (3 covalent Bonds) Carbon (4 covalent bonds)
What is a group of atoms held together by chemical bonds? molecule
What is a covalent bond? Strong or weak? atoms sharing 1 or more electron pairs (Strong bond not easily broken)
What is a Ionic bond? Strong or weak? Attraction of opposite charges (weak easily broken
What are the chemical bonds that hold atoms together in molecules? covalent bond and ionic bond
What is a Hydrogen bond? Strong or weak? Sharing of H atom (H=Hydrogen) Weak bond easily broken
What is a Hydrophobic Interaction? Strong or weak? Forcing of hydrophobic portions of molecules together in the presence of a polar substance (weak bond easily broken)
What is a Van Der Walls attraction? Strong or weak? interactions between atoms due to oppositely polarized electron clouds (weak)
Explain Hydrogen bonds; A weak attraction between the slight positive charge of one molecule and the slight negative charge of another molecule. OR between the slight charges different parts of the same very large molecule. (also molecules where H atom is bonded to another atom)
Created by: hiatt02
 

 



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