NATURAL SCIENCE FINAL EXAM

"magnets have two oppositely polarized ends" is which of the following? - a scientific fact a reaction that happens spontaneously will likely have which of the following characteristics? - the electrons will be in a lower energy state in the products than in the reactants a scientific observation must be which of the following? - reproducible after mixing the ingredients for a salad, why do the ingredients remain mixed? - the statistical likely hood is so low that the chance of it happening is essentially zero among earths evolving life, the order of the arrangement of atoms is related to disorder in what other part of the system? - sun an atom is capable of making very complicated, covalently-bonded molecules is - carbon an electromagnetic wave cannot arise directly from which of the following? - a sound wave an example of the difference between your weight and your mass is that - your weight is different on earth compared to on the moon, but your mass remains constant everywhere an experiment is performed in which different masses and shapes are dropped from different heights and the times it takes for each to reach the ground are recorded. which of the following is the dependent variable? - time an ionic bond forms when which of the following happens - an atom that likes to give up an electron interacts with an atom that likes to take electrons because a neutral sodium atom has 11 electrons, sodium is - a highly reactive element because of the distribution of electrical charges in metals, metals tend to be - malleable compounds of what element may be released into the atmosphere upon burning of fossil fuels and lead to formation of acid rain - sulfur frequency modulation can be described by which of the following? - radio wave is allowed to vary in its wavelengt