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18 Cards in this Set
- Front
- Back
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What are atoms? |
Makes up all matter and cannot be broken down into a simpler form Has 2 minutes: nucleus contains positive charged protons and neutral neutrons. Electrons negatively charged and move around in space that surrounds cell. |
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what is atomic number? |
Number of protons in a nucleus. |
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What are electron shells? |
Region where electrons move around. 2 8 18 |
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What is an ion? |
An ion is formed when an atom gives up or gains an electron resulting in a positive or a negative charge. |
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What is a molecule? |
Combination of two or more atoms that share electrons. |
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Where is molecular formula? |
Indicates number and type of atoms that make up a molecule. |
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What is a chemical bond? |
The chemical bonds the force that binds atoms of molecules and components together and resist separation and depends on number of electrons in outermost shell. |
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What is ionic bond? |
Force of attraction between oppositely charged ions |
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Where is covalent bond? |
Atoms share electrons most common bond in body and does not dissolve in water |
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What is a synthesis reaction? |
Two or more atoms ions or molecules form new and larger molecules. |
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What is a decomposition reaction? |
Molecules split apart and in body known as catabolism |
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What are inorganic and organic compounds? |
Inorganic lack carbon simple structures and held together usually by ionic or covalent bonds Organic compounds always contain carbon usually also hydrogen and also have covalent bonds |
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What are acids bases and salts |
Acid substances that break apart or dissociate into one or more hydrogen ions when dissolved in water Basis usually dissociate into a one arm or hydroxide ions when dissolved in water Salts when soft and water dissociate into cations and anions |
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What are buffer solutions? |
buffer solutions of chemical compounds that act quickly to temporarily bind hydrogen ions in order to prevent drastic change in pH by converting strong acids and bases into weak. |
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What are carbohydrates? |
Organic compounds that contain cho and there are three main types: Monosaccharide simple glucose Disaccharide two monosaccharides linked together Polysaccharides large and complex many monsacchirides joined together via a dehydration synthesis |
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What are lipids? |
Hydrophobic and insoluble in water very diverse and contains cho includes fats oils phospholipids and steroids and vitamins adek |
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What are proteins? |
Made up of amino acids which have the amino group carboxyl group and variable r group |
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Where are nucleic acids? |
DNA provide blueprint of life has the bases ATGC
RNA intermediate between DNA and protein has you instead of tea
ATP chemical energy used to buy cell and released when phosphate bonds break. |
