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| negative charged subatomic particles surrounding the nucleus |
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| neutral charged subatomic particles found in the nucleus |
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| positive charged subatomic particles found in the nucleus |
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| pure substance that consists entirely of one type of atom. They are represented by one or two letter symbols. |
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| atoms of the same element that differ in number of neutrons they carry. |
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| weighted average of the masses of an element's isotopes. |
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| number of protons in an atom of an element |
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| bond is formed when one or more electrons are transferred from one atom to another. |
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| intermolecular force of attraction, when molecules are close together, and a slight attraction develops between the oppositely charged regions of nearby molecules.(Gecko's feet) |
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| bond is formed when electrons are shared between atoms |
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| attraction between the hydrogen atom on one molecule to a negative atom on another molecule. Not very strong bonds, strong between molecules |
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| scale that measures of the hydrogen ion concentration in a solution |
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| any compound that forms hydrogen ions in solution. Have a pH<7 |
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| any compound that forms hydrogen ions in solution. Have a pH>7 |
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| Because atoms have equal numbers of electrons and protons, atoms are |
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| Isotopes that have unstable nuclei are: |
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| Substance formed by the chemical combination of two or more elements in definite proportions. |
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| an unequal sharing of electrons in a molecule. One end is slightly positive and the other is slightly negative. (Water) |
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| Results when atoms are joined together by covalent bonds. Smallest unit of most compounds. |
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| attraction between molecules of the same substance |
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| attraction between molecules of different substances |
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| material composed of two or more elements/compounds that are physically mixed but not chemically combined(salt and pepper) |
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| mixture of two or more substances in which the molecules of the substances are evenly distributed. |
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| In a salt-water solution, salt is the: |
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| In a salt-water solution, water is the: |
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| When materials do not dissolve when placed in water, but separate into pieces so small they do not settle out. |
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| weak acids or bases that can react with strong acids or bases to prevent sharp, sudden changes in pH |
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| carbon atoms have how many valence electrons? |
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| Carbon-carbon bonds can form how many covalent bonds? |
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| smaller units are _____. Join together to form ______ |
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| Four groups of organic compounds found in living things are: |
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| carbohydrates, lipids, nucleic acids, and protein |
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| carbohydrates are made up of: |
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| carbon, hydrogen,and oxygen(C.H.O.) |
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| Living things use carbohydrates for: |
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| main source of energy, and structural purposes |
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| Living things store extra sugar as: |
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| large macromolecules formed by monosaccharides |
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| lipids are not soluble in _____ |
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| carbon and hydrogen(C.H.) |
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| Common groups of lipids are: |
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| Lipids can be used to store _____ |
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| when each carbon atom in lipid's fatty acid chains is joined to another carbon atom by a single bond, the lipid is called |
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| when there is at least one carbon-carbon bond in a fatty acid, it's called |
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| lipids whose fatty acids contain more than one double bond are called |
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| carbon,hydrogen,oxygen,nitrogen,and phosphorus (C.H.O.N.P) |
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| Nucleic acids are polymers made up of individual monomers known as_____. These contain three parts: |
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| nucleotides. 5-carbon sugar, phosphate group, and nitrogenous base. |
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Nucleic acids store and transmit:
Two kinds of nucleic acids: |
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hereditary or genetic information.
ribonucleic acid and deoxyribonucleic acid |
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