Dr. Heiny: Learning Guide 02
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Law | A summary of observations.
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| Theory | A unifying statement that explains a body of facts and the laws based on that body of facts. Theories may be rejected with the development of new instruments or experimental procedures. Theories are never proven.
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| Scientific method | A systematic procedure for solving problems and exploring natural phenomena
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| Measurement | Quantitative observations (measurements) usually involving the metric system.
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| Natural Law | Same as a "Law" - clarifying that the summary of observations is focused on nature.
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| Dependent variable | A variable that a scientist measures in an experiment and what is affected during the experiment. The dependent variable "depends" on the independent variable.
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| Hypothesis | A proposed explanation of an observation that is tentative (temporary) and testable.
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| Independent variable | A variable that the scientist manipulates in an experiment and what influences the dependent variable in the experiment.
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| Law of conservation of mass | The mass in a closed system does not vary; mass cannot be created/destroyed, although it may be rearranged in space, and changed into different types of particles.
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| Model | A physical, visual, or mathematical representation. Sometimes chemists use analogies (models) to help communicate a process or concept.
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| Qualitative data | Observations that do not involve measurements or numbers, i.e., color, texture, size, shape
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| Quantitative data | Observations involving numbers, for example, numbers from a Cent-O-gram balance (mass), a ruler (length), or graduated cylinder (volume).
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
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If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
LPH
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