# &app; manual

# &app; Manual V&manrevision;

2006
Jean Bréfort

&legal;

GNOME Documentation Project
Jean
Bréfort

     jean.brefort@normalesup.org

&app; Manual V&manrevision;
&date;

Jean Bréfort jean.brefort@normalesup.org

GNOME Documentation Project

This manual describes version &appversion; of &app;.

## Feedback

To report a bug or make a suggestion regarding the &app; application or this manual, go to the &app; home page.

&app; is a chemistry elements periodic table application.

## Introduction

The &app; application is a chemical elements periodic table application.

## Getting started

### To Start &app;

You can start &app; in the following ways:

Applications menu

  Choose Education Periodic table of the elements .

Command line

  Type `gchemtable`, then press Return.

### When You Start &app;

When you start &app;, the following window is displayed:

#### &app; window

Screenshot of the &app;window.

The &app; window contains the following elements:

Menubar

  The menus on the menubar contain all of the commands you need to work with &app;.

Periodic table

  A periodic table of the elements. The colors used for the buttons are conventional colors for the elements. Other color schemes are available as explained there.

## Usage

### Color Schemes

Several color schemes are available:

No colors

  All buttons are grey.

Default

  Conventional colors are used.

Physical state

  The color of the button depends on the physical state of the element at a given temperature. This temperature can be changed using the horizontal scale.

  #### Physical state color scheme

  Screenshot of the Main Page with Physical state color scheme.

  Buttons with a black background indicate that the state is unknown at the given temperature.

Family

  The data used are the element family as given in the Blue Obelisk Data Repository. If no family is given in the database, the button will have a black background.

  #### Family color scheme

  Screenshot of the Main Page with Physical state color scheme.

  If a family is selected in the combo box, only elements of this family will be displayed with their family color used as background, other elements are attributed a black background.

### Element Window

This window shows the data for an element. To display it, press the corresponding element button in the periodic table. It is possible to display several such windows at once.

The data are spread over several pages, the following screenshots show the various pages for the iron element:

Main Page

  #### Main Page

  Screenshot of the Main Page.

Electronic Properties

  #### Electronic Properties Page

  Screenshot of the Electronic Properties Page.

Radii

  #### Radii Page

  Screenshot of the Radii Page.

Thermodynamic Properties

  #### Thermodynamic Properties Page

  Screenshot of the Thermodynamic Properties Page.

When a Show curve appears on the same line than a data, it is possible to display a chart of this data as a function of the element atomic number by clicking on the button.

### Curves

Curves as displayed in &app; look like:

#### First ionization energy curve

Screenshot of the first ionization energy curve.

Consecutive points are joined by a segment. The absence of a segment means that at least one data is missing.

The chart can be copied to other applications with the use of the Copy button.

## License

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

A copy of the GNU General Public License is included as an appendix to the GNOME Users Guide. You may also obtain a copy of the GNU General Public License from the Free Software Foundation by visiting their Web site or by writing to

        Free Software Foundation, Inc.
        51 Franklin St - Fifth Floor
        Boston, MA 02111-1307
        USA