A Chemistry
<ol style="margin: 0px; padding: 0px; border: 0px; font-variant-numeric: inherit; font-variant-east-asian: inherit; font-stretch: inherit; line-height: inherit; font-family: "Helvetica Neue", Helvetica, "Nimbus Sans L", Arial, "Liberation Sans", sans-serif; vertical-align: baseline; background-image: none; background-position: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; list-style-position: inside; list-style-image: initial; color: rgb(34, 34, 34);"><li style="margin: 0px 0px 10px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline; background-image: none; background-position: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial;"><span class="ib-brac" style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline; background-image: none; background-position: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial;">(</span><span class="ib-content" style="margin: 0px; padding: 0px; border: 0px; font-style: italic; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline; background-image: none; background-position: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial;"><a href="https://en.m.wiktionary.org/wiki/Appendix:Glossary#uncountable" title="Appendix:Glossary" style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline; background-image: none; background-position: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; color: rgb(107, 75, 161);">uncountable</a></span><span class="ib-brac" style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline; background-image: none; background-position: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial;">)</span> The branch of natural <a href="https://en.m.wiktionary.org/wiki/science" title="science" style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline; background-image: none; background-position: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; color: rgb(107, 75, 161);">science</a>that deals with the composition and constitution of <a href="https://en.m.wiktionary.org/wiki/substance" title="substance" style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline; background-image: none; background-position: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; color: rgb(107, 75, 161);">substances</a> and the changes that they undergo as a consequence of alterations in the constitution of their <a href="https://en.m.wiktionary.org/wiki/molecule" title="molecule" style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline; background-image: none; background-position: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; color: rgb(107, 75, 161);">molecules</a>.</li><li style="margin: 0px 0px 10px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline; background-image: none; background-position: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial;"><span class="ib-brac" style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline; background-image: none; background-position: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial;">(</span><span class="ib-content" style="margin: 0px; padding: 0px; border: 0px; font-style: italic; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline; background-image: none; background-position: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial;"><a href="https://en.m.wiktionary.org/wiki/Appendix:Glossary#countable" title="Appendix:Glossary" style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline; background-image: none; background-position: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; color: rgb(107, 75, 161);">countable</a></span><span class="ib-brac" style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline; background-image: none; background-position: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial;">)</span> An <a href="https://en.m.wiktionary.org/wiki/application" title="application" style="margin: 0px; padding: 0px; border: 0px; font-style: inherit; font-variant: inherit; font-weight: inherit; font-stretch: inherit; line-height: inherit; font-family: inherit; vertical-align: baseline; background-image: none; background-position: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; color: rgb(107, 75, 161);">application</a> of chemical theory and method to a particular substance.</li></ol>