bio_2.1_ - Introduction to Chemistry for Biologist Define...

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Introduction to Chemistry for Biologist Define the following terms Matter Matter is anything that has mass and takes up space. Matter is made of tiny particles called atoms. Atoms Atoms are made up of three subatomic particles. Protons, neutrons and electrons. Neutrons Neutrons are neutral charged atoms in the central part of an atom and are calculated through a calculation of mass - protons Protons Protons are positively charged subatomic particles and is calculated by finding the atomic number as the number of protons is equal to the atomic number of an atom Electrons Electrons are negatively charged subatomic particles and are calculated by the number of protons. Electrons orbit the atom and help to create bohr rutherford diagrams and lewis dot diagrams. Atoms description Atoms are electrically neutral and have an equal number of protons and electrons. Atoms have no overall charge Ions Ions are electrically charged and have different amounts of protons and electrons. Ions have overall charges because they strive to gain or lose electrons to achieve octet or a full outer orbital like noble gases. If an ion has to gain an electron it becomes negatively charged and is called an anion. If a ion loses electrons it becomes positively charged and is called a cation

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