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Ahypothesis must be testable and falsifiable to be considered scientific a. trueb. false
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Describe the forces both attractive and repulsive that occur as two atoms move closer together.
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Which best describes the activation energy of a chemical reaction? a. the combined energy of all the reactants b. the amount of energy required for a reaction to occur c. the difference in energy between products and reactants d. the potential energy stored in the bonds of reactants and products
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Which of these are physical changes in matter? check all that apply boiling water a pencil being sharpened exploding dynamite freezing water rotting cheese
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The combustion of magnesium in the air produces the oxide of magnesium. The name of the compound is...
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