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| negatively charged particle- one of the particles that makes up an atom- outside the nucleus-smallest particle- most elements try to get 8 electrons in their outer orbits negative charge-mass next to nothing- involved in bonding |
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| a substance formed by the chemical combination of two or more elements in definite proportions. Made up of carbon, hydrogen, oxygen- Water is an example two atoms of hydrogen for each aton of oxygen |
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| a pure substance that consits entirely of one type of atom about 114 of them |
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| carries no charge- one of the particles that make up atoms |
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| postive charged particle - one of the particles that makes up an atom- Number of protons determines the identity of the element |
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| the smallest unit of most compounds |
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| compounds made up of carbon, hydrogen, and oxygen atoms usually in a ratio of 1:2:1. Living things use carbohydrates as their main source of energy |
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| single sugar - glucose is an example of a simple sugar |
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| large molecules formed from mononsaccharides |
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| made most of carbon and hydrogen atoms- used to store energy and some are important in biologivcal membranes and waterproof covering. ex steriods |
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| the center of the atom -formed from protons and neutrons-contains most of the mass of an atom |
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| "giant molecules"- from from thousands of smaller molecules |
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| large compound --what is formed when monomers are joined together |
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| store and transmit hereditary or genetic information -- also known as macromolecules containing hydgrogen, oxygen, nitrogen, carbon, and phosphorus -- polymers |
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| the monomers of proteins-the building blocks of proteins |
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| macromolecules of nitgorgen, carbon, hydrogen, and oxygen- control the rate of reactions and regulate cell processes- some are used to form bones & muscles |
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| proteins that speed up chemical reactions that take place in the cell |
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| a substance that speeds up the rate of a chemical reactions |
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| the reactants of enzyme-catalyzed reactions |
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| the elements or compounds that enter into a chemical reaction |
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| the elements or compounds produced by a chemical reaction |
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| a site where reactants can be brought togeether to react |
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| compounds created by organisms |
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| the chemistry of nonliving things |
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no other element has as much versatility in it's ability to bond to
other elments- living organisms are
made up of molecules that consist of carbon- C is the letter symbol- has 6 protons |
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| when electrons are shared between atoms- example water molecule |
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| the most abundant gas in the atmosphere -important component of fertilizer- has 7 protons |
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| the letter O is the symbol- the second most abundant gas in the atmosphere- has 8 protons |
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| H is the symbol hydrogen has 1 proton |
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| element or compound produced by a chemical reaction |
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