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31 Cards in this Set
- Front
- Back
Precise means of asking questions about the natural world.
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Scientific Method
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A tentative explanation of a phonomenon based on plausible scientific knowledge. Must be testable and lead to conclusions.
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Hypothesis
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Based on deductive "if/then" reasoning
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Predictions
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A hypthesis that has high probability of being correct because it has been tested repeatedly and found correct.
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Theory
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The best example of a theory is the...
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Theory of Evolution
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The condition under study and which is manipulated by the experimenter.
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Independent Variable
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The variable being measured.
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Dependent Variable
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In an experiment, this controls every variable but one.
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Control Group
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Science is...
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Progressive ( things change over time)
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Characteristics of science include...
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1. dealing w/ natural world
2. rational/logical thought 3. idea that the universe is explainable |
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Branch of philosophy w/ idea that the universe is explainable
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Mechanism
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Living things have a vital force beyond chemistry and physics. Deals with supernatural and religious ideas.
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Vitalism
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Limitations of Science include...
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1. religion and the supernatural
2. morals, ethics, virtues, justice 3. uncertainty |
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Characteristics of living things include...
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1. complex and highly organized
2. take in energy from their environment 3. capable of growth and reproduction 4. respond to their environment 5. evolve |
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A body part composed of several tissues that are grouped together
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organs
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an association of cells of one type performing one function
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tissues
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prefix meaning large
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macro
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organisms that obtain organic material from outside themselves
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heterotrophs
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organisms that can synthesize their own organic material by taking energy from sunlight
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autotrophs
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The smallest unit of an element that still retains chemical properties of that element
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atom
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The number of protons is equal to the...
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number of electrons
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number of protons in atomic nucleus
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atomic number
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Protons and neutrons contribute to the...
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atomic mass (atomic weight)
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The unit for atomic mass
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Dalton
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Forms of an element that differ in mass due to the number of neutrons they contain. Can sometimes be radioactive
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isotopes
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Space in which an electron is found 90% of the time
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orbital
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Electrons are classified by...
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the energy they possess
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electrons will arrange to have the...
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minimum amount of energy possible
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Atoms or groups of atoms that have a net charge
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ion
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two or more atoms linked together by chemical bonds
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molecules
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A chemical bond formed by electrical attraction between a positive and negative ion. Can only be formed between atoms that need to loose one or two electrons. The intermediate strength.
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ionic bond
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