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# CH.1 ps

### CH.1

Term | Definition |
---|---|

science | study of the natural world |

observing | using one or more senses to gather information |

inferring | explaining your observation |

predicting | making a forecast of what will happen in the future |

chemistry | the study of the properties of matter and how matter changes. |

physics | is the study of matter, energy , motion , and forces |

scientififc Inquiry | different ways scientists study natural world |

Hypothesis | an answer to a scientific question |

parameter | a factor that can be measured in an experiment |

manipulated variable | is the independent variable in the experiment.It's the only one you can change. |

responding variables | expected to change because of the manipulated variable |

controlled variables | an experiment in which only one variable is manipulated at a time |

data | are the facts, figures and other evidence gathered through observations |

Qualitative | is using description |

quantitative | data is measured with numbers |

communicating | is sharing ideas , and conclusions with others through writing and speaking |

model | is a picture, diagram, computer image , or other representation of an object or process. |

Scientific theory | well tested for a wide range of observations or experimental results. |

Scientific Law | statement that describes what scientists expect to happen every time under a particular set of conditions. |

Graph | a picture of information from a data table that shows |

horizontal axis (x axis) | a line that runs left to right along the bottom of a graph , on which manipulated variable(independent variable ) is labeled. |

vertical axis (y axis) | a line that runs up and down along the side of a graph on which the responding variable or (dependent variable) is labeled. |

orgin | the (0,0) point on a line graph |

coordinate | a pair of numbers used to determine the position of a point on a graph. |

data point | a point on a graph showing a location of a piece of data. |

line of best fit | a smooth line that reflects the general pattern in a graph. |

Linear graph | a line graph which the data points yield in a straight point. |

slope | the steepness of a line on a graph equal to its vertical change divided by it's horizontal change. |

Non Linear graph | a line graph in which the data points do not follow in a straight line. |

Created by:
helen lawendy