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7.15 Mrs Jensen
Cell Processes
27
Science
7th Grade
09/14/2011

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Term
atom

7.15
Definition
makes up all matter and is made up of protons, neutrons, and electrons
Term
metabolism

7.15
Definition
the total of all chemical reactions in an organism
Term
chemical bonds

7.15
Definition
store energy for cells
Term
fermentation

7.15
Definition
a form of respiration that releases energy from gluclose when oxygen is not available
Term
nucleus

7.15
Definition
found in the center of an atom and contains protons and neutrons
Term
ions

7.15
Definition
atoms with a positive or negative electrical charge
Term
neutron

7.15
Definition
the neutral particle in the nucleus
Term
compounds

7.15
Definition
the atoms of 2 or more elements that combine chemically to form a new substance
Term
diffusion

7.15
Definition
the movement of molecules from areas of high concentration to areas of low concentration
Term
electron

7.15
Definition
the negative particle surrounding the nucleus
Term
chemical reaction

7.15
Definition
occur when chemical bonds break, new bonds form, and atoms are rearranged
Term
photosynthesis

7.15
Definition
stores energy through chemical bonds
Term
consumers

7.15
Definition
organisms that cannot make their own food and consumer energy by eating other consumers and producers
Term
suspension

7.15
Definition
a mixture in which substances are evenly spread through a liquid or gas
Term
mixture

7.15
Definition
a combination of substances in which individual substances retain their own properties
Term
molecule
Definition
atoms combine by sharing electrons
Term
chemical energy

7.15
Definition
bonds groups of atoms together
Term
atomic mass

7.15
Definition
the number of protons plus the number of neutrons in the nucleus of an element
Term
producers

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Definition
organisms that make their own food, most of which use photosynthesis
Term
matter

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Definition
anything that has mass and takes up spaces
Term
solution

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Definition
a mixture in which two or more substances are mixed evenly
Term
atomic number

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Definition
the number of protons in an element
Term
element

7.15
Definition
the simplest form of matter that cannot be broken down by ordinary means
Term
inorganic compounds

7.15
Definition
compounds that are made from elements other than carbon
Term
organic compounds

7.15
Definition
made up of most compounds that contain carbon including carbohydrates, lipids, proteins, and nucleic acids
Term
proton

7.15
Definition
the positive particle in the nucleus of an atom
Term
neutron

7.15
Definition
the neutral particle in the nucleus
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