Scientists at a metallurgic factory are testing different metals to study the strength of the electrical forces between their atoms. They determined the force needed to bend a sheet of each metal and found that Metal A requires 50 N of force, Metal B requires 30 N, Metal C requires 70 N, and Metal D requires 100 N. Which metal will have the lowest melting point? (Force has a direct relationship with melting point, meaning the higher the melting point the more force it takes to bend the meta
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What type of reaction is shown below? check all that apply. 2h2o2 ā 2h2o + o2 synthesis decomposition combustion
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What are the 4 phases of matter in order of increasing engery content?
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Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.
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Two solids are mixed in a flask and stirred. after a few minutes, the flask becomes cold. which of the following best describes this reaction? a. an exothermic reaction b. a combustion reaction c. an endothermic reaction d. a decomposition reaction
Answers: 1
Scientists at a metallurgic factory are testing different metals to study the strength of the electr...
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