Eighth Grade Science Crossword Puzzle

QUESTIONS LIST: electrons : a stable subatomic particle with a charge of negative electricity, found orbiting the nucleus of an atom, period : the name given to a horizontal row of the periodic table, pandemic : a disease that has spread over a whole country or the world, producer : an organism, either a green plant or bacterium, which is part of the first level of a food chain, solute : the substance that is dissolved in a solution, isotope : each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons, fossil : the remains or impression of a prehistoric organism preserved in petrified form or as a mold or cast in rock, niche : the role or function of an organism or species in an ecosystem, matter : has mass and takes up space, outbreak : the sudden start of a disease, abiotic : physical rather than biological; not derived from living organisms, lipids : fatty acids that include many natural oils, waxes, and steroids, symbiotic : the relationship between diverse organisms that live together, products : a substance that is formed as the result of a chemical reaction. products are on the right side of a chemical equation, element : a substance that cannot be broken down into simpler substances by chemical means, genetics : the study of heredity and the variation of inherited characteristics, homogeneous : uniform, same throughout, exothermic : reaction that produces heat as the reaction proceeds, extinction : the state or process of a species, family, or larger group ceasing to exist; the species has vanished, metabolism : the chemical processes that occur within a living organism in order to maintain life, density : physical property; mass divided by volume, epidemic : a widespread occurrence of an infectious disease in a community at a particular time