1) a number that summarizes a set of data and that can be computed by adding all the numbers in a list and then dividing by the number of numbers in the list a) average b) mode c) equilibrium 2) the moment when two objects hit each other a) infer b) mean c) collision 3) the ability to make things move or change a) infer b) energy c) matter 4) a balanced state in which a system is stable, such as when two or more samples are at the same temperature a) average b) equilibrium c) molecule 5) to reach a conclusion using evidence and reasoning a) equilibrium b) matter c) infer 6) the energy that an object has because it is moving a) kinetic energy b) infer c) collision 7) anything that has mass and takes up space a) temperature b) matter c) energy 8) a group of atoms joined together in a particular way a) molecule b) matter c) kinetic energy 9) a small part that is meant to show what the whole is like a) system b) thermal energy c) sample 10) when something stays mostly the same over time a) system b) stable c) matter 11) measure of the AVERAGE kinetic energy of the particles in a system a) temperature b) infer c) energy 12) the TOTAL kinetic energy of all the molecules that make up a sample a) temperature b) thermal energy c) motion 13) to move from one object to another or one place to another a) kinetic energy b) transfer c) molecule

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