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ScienceSemesterRevie
this is the semester review
Question | Answer |
---|---|
How would you design an experiment that would determine if a solid was a compound or mixture? | Measure a number of physical and chemical properties and compare them to resported properties of the elements. |
Describe what scientists mean by a controlled experiment. | One variable changes while other variables or fixed. |
What would be most important in designing a treatment to keep wood from rotting on playground equipment. | Non-toxic to people. |
Delineate unintended consequences and provide an example. | People finding your private information on a computer. |
What does a spring scale measure? | Gravitational force and weight. |
After making a hypothesis,what is the next step? | Test it with experiments. |
Give an example of how bio-engineering could be used to save a species of animals that is being killed by a new disease? | Modifying genes of some animals to improve the ability for that animal to recover. |