https://qbase.texpertssolutions.com/index.php?action=history&feed=atom&title=Category%3AChemistry 2026-08-12T07:43:24Z Revision history for this page on the wiki MediaWiki 1.43.1 https://qbase.texpertssolutions.com/index.php?title=Category:Chemistry&diff=137&oldid=prev 2025-05-24T04:42:45Z

<p><span class="autocomment">Famous Chemists</span></p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 04:42, 24 May 2025</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l40">Line 40:</td> <td colspan="2" class="diff-lineno">Line 40:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Famous Chemists ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Famous Chemists ==</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* <del style="font-weight: bold; text-decoration: none;">**</del>Dmitri Mendeleev<del style="font-weight: bold; text-decoration: none;">** </del>– Developed the Periodic Table   </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* <ins style="font-weight: bold; text-decoration: none;">[[</ins>Dmitri Mendeleev<ins style="font-weight: bold; text-decoration: none;">]] </ins>– Developed the Periodic Table   </div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* <del style="font-weight: bold; text-decoration: none;">**</del>Marie Curie<del style="font-weight: bold; text-decoration: none;">** </del>– Discovered radioactivity   </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* <ins style="font-weight: bold; text-decoration: none;">[[</ins>Marie Curie<ins style="font-weight: bold; text-decoration: none;">]] </ins>– Discovered radioactivity   </div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* <del style="font-weight: bold; text-decoration: none;">**</del>Antoine Lavoisier<del style="font-weight: bold; text-decoration: none;">** </del>– Father of modern chemistry   </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* <ins style="font-weight: bold; text-decoration: none;">[[</ins>Antoine Lavoisier<ins style="font-weight: bold; text-decoration: none;">]] </ins>– Father of modern chemistry   </div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>* <del style="font-weight: bold; text-decoration: none;">**</del>Ahmed Zewail<del style="font-weight: bold; text-decoration: none;">** </del>– Father of femtochemistry (won Nobel Prize in 1999)</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>* <ins style="font-weight: bold; text-decoration: none;">[[</ins>Ahmed Zewail<ins style="font-weight: bold; text-decoration: none;">]] </ins>– Father of femtochemistry (won Nobel Prize in 1999)</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Conclusion ==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Conclusion ==</div></td></tr> </table>

Thakshashila https://qbase.texpertssolutions.com/index.php?title=Category:Chemistry&diff=136&oldid=prev 2025-05-24T04:29:54Z

<p>Created page with &quot;= What is Chemistry? - Definition, Explanation, and Importance = &#039;&#039;&#039;Chemistry&#039;&#039;&#039; is the branch of science that studies the &#039;&#039;&#039;composition&#039;&#039;&#039;, &#039;&#039;&#039;structure&#039;&#039;&#039;, &#039;&#039;&#039;properties&#039;&#039;&#039;, and &#039;&#039;&#039;changes of matter&#039;&#039;&#039;. It helps us understand how substances interact, combine, and change to form new substances. == Definition == Chemistry is the scientific study of: * What matter is made of (elements, atoms, molecules) * How substances behave and interact * How new materials are form...&quot;</p> <p><b>New page</b></p><div>= What is Chemistry? - Definition, Explanation, and Importance =<br /> <br /> &#039;&#039;&#039;Chemistry&#039;&#039;&#039; is the branch of science that studies the &#039;&#039;&#039;composition&#039;&#039;&#039;, &#039;&#039;&#039;structure&#039;&#039;&#039;, &#039;&#039;&#039;properties&#039;&#039;&#039;, and &#039;&#039;&#039;changes of matter&#039;&#039;&#039;. It helps us understand how substances interact, combine, and change to form new substances.<br /> <br /> == Definition ==<br /> <br /> Chemistry is the scientific study of:<br /> * What matter is made of (elements, atoms, molecules)<br /> * How substances behave and interact<br /> * How new materials are formed through chemical reactions<br /> <br /> == Word Origin ==<br /> <br /> The word &quot;Chemistry&quot; comes from the Greek word &#039;&#039;&#039;&quot;khemeia&quot;&#039;&#039;&#039;, meaning &quot;art of transformation&quot;.<br /> <br /> == Main Branches of Chemistry ==<br /> <br /> 1. [[Physical Chemistry]] – Studies the physical properties and behavior of chemical systems <br /> 2. [[Organic Chemistry]] – Deals with carbon-based compounds (e.g., fuels, plastics) <br /> 3. [[Inorganic Chemistry]] – Deals with non-carbon compounds (e.g., metals, salts) <br /> 4. [[Analytical Chemistry]] – Involves identifying substances and their amounts <br /> 5. [[Biochemistry]] – Studies chemicals and processes in living organisms <br /> <br /> == Why is Chemistry Important? ==<br /> <br /> * It explains everyday phenomena (e.g., cooking, rusting, digestion) <br /> * Chemistry is essential for industries like medicine, agriculture, energy, and cosmetics <br /> * It helps create products such as medicines, fertilizers, soaps, plastics, and fuels <br /> * Chemistry improves our understanding of nature and life<br /> <br /> == Examples in Daily Life ==<br /> <br /> 1. **Cooking food** involves chemical changes when heat breaks or forms bonds in food. <br /> 2. **Baking soda + vinegar** → carbon dioxide gas (used in science experiments) <br /> 3. **Rusting of iron**: <br /> &lt;math&gt;\text{4Fe + 3O}_2 + 6H_2O \rightarrow \text{4Fe(OH)}_3&lt;/math&gt; <br /> 4. **Photosynthesis in plants**: <br /> &lt;math&gt;6CO_2 + 6H_2O \rightarrow C_6H_{12}O_6 + 6O_2&lt;/math&gt; (in presence of sunlight)<br /> <br /> == Famous Chemists ==<br /> <br /> * **Dmitri Mendeleev** – Developed the Periodic Table <br /> * **Marie Curie** – Discovered radioactivity <br /> * **Antoine Lavoisier** – Father of modern chemistry <br /> * **Ahmed Zewail** – Father of femtochemistry (won Nobel Prize in 1999)<br /> <br /> == Conclusion ==<br /> <br /> Chemistry is everywhere — in the food we eat, the air we breathe, the soap we use, and even in our bodies. It helps us understand the material world and provides the foundation for numerous scientific and technological advances.<br /> <br /> [[Category:Chemistry]]<br /> [[Category:Science]]<br /> [[Category:Grade 10]]<br /> [[Category:Grade 12]]<br /> [[Category:STEM]]</div>

Thakshashila