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13 Cards in this Set

  • Front
  • Back
Qualitative and Quantitative Data
Qualitative: data that you your your five senses

Quantitative: data that has numbers(data chart)
Independent and Dependent Variable
Independent: the variable that affects the outcome of the experiment

Dependent: the variable that results from changes in the independent
Control and Constant and Experimental Group
Control: the standard against which results are compared

Constant: things that stay the same

Experimental Group: group thats gets tested on
the explanation for a question or a problem that can be formally tested
the explanation of a natural phenomenon supported by a large body of scientific evidence obtained from many different investigations and observations
Cell Theory
1- all organisms are composed of one or more cells

2- the cell is the basic unit of structure and organizations of organisms

3- all cells come from preexisting cells
Anton van Leeuwenhook
used a microscope to view water from a pond, and he discovered many living creatures
Robert Hooke
used a microscope to observe a thin slice of cork in 1665, he saw "a lot of little boxes", he called them cells
Mattias Schleiden
german botanist, concluded that cells make up not only the stems and roots but every part of the plant
Theodor Schwann
german zoologist, claimed that animals are also made of cells
Rudolph Virchow
german physician, determined that cells come only from other cells
Schleidan, Schwann, and Virchow
helped from the cell theory with observations
Covalent, Ionic, and Hydrogen Bonding
Covalent: a bond when two or more atoms share electrons to form a molecule

ionic: a bond when molecules gain or lose electrons

hydrogen: bond in a water molecule when molecules are shared by oxygen and hydrogen