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30 Cards in this Set
- Front
- Back
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A proposed solution or explanation of a scientific event in nature is called a
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Theory
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The factor being tested in an experiemnt is the
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variable
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The metric system is based or scaled on powers of
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10
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The basic unit of length in the metric system is the
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meter
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The basic unit of masss in the metric system is the
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kilogram
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anabolism
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any process in a living thing that involes putting together or synthesizing complex subtances form simpler substaces
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catabolism
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breakdown of complex substances into simpler ones, resulting in release of energy
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homeostasis
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the process by which organisms respond to stimuli in ways that keep conditions in their body suitable for life
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compound light microscope
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uses both objective and ocular lens to form an image
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limit of resolution
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beyond this point objects get blurry
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transmission electron miroscopes
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shine a beam of electrons at a sample and mangnify the image of that sample onto a fluorescent screen
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scanning electron microscopes
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penicilike beam of electrons tha tscans back and forth across the surgace of a specimen.3-d pics, used to see detailed pics. of surface
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The lens at the top of a compond light misroscope is called the
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ocular lens
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TO see atoms on a surface, use a
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scanning probe microscope
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isotope
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Atoms of the same elemnt that have the same number of protons but different number of neutrons
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chemical bonding
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the interactions of involve the the combinding of atoms of elements in a process
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atomic number
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the number of protons in the nucleous
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ionic bonding
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a bond that involves a transfer of electrons
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convalent bonding
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a chemical bond formed by the sharing of electrons is known as a covalent bond
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ion
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they are formed when ionic bonding occurs these atoms are charged particles not neutral
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mass number
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total number of protons and neutrons
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molecule
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the combination of atoms that results forms a separate unit
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Substances that enter into a chemcial reactions are known as
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reactants
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solvent
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substance that does the dissovling
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solute
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the substance that is being dissolved
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acids
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compounds that release hydrogen ions into solution are know as acids
ex.hydrocholoric acid |
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bases
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compounds that release hydroxide ions into solution
ex. soduim hydroxxide |
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pH scale
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a measurment system that indicates the relative concentrations ofthese two ions, hydrogen and hyhydroxide
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polymerization
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large compounds are constructed by joinging togethere smaller compounds
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monomers
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smaller compounds
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