Chapter 1 - new knowledge or to answer fundamental...

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Vocabulary for Chemistry and Society 1.Chemistry-is the study of matter and the changes it undergoes. 2.Natural Philosophy-Philosophical speculation about nature 3. Alchemy-a mystical investigation practiced in the middle ages 4.Technology-practical application of knowledge 5. Science-is an accumulation of knowledge about nature and our physical world based on observations and experimental tests of our assumptions. 6.Hypothesis-a tentative explanation of observations 7. Theory- the best current explanation for a phenomenon 8. Scientific Law- is a brief statement that summarizes large amounts of data 9. Scientific Model- uses tangible items or pictures to represent invisible processes and help explain complex phenomena 10. Variables- those things that can change during an experiment 11. Risk-Benefit Analysis- can help us decide which outweighs the other 12. Applied Research- is to make particular kinds of useful products 13. Basic Research- carried out simply to obtain
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Unformatted text preview: new knowledge or to answer fundamental questions 14. Matter- is anything that has mass and takes up space 15. Mass- is a measure of the amount of matter in an object 16. Weight- represents the gravitational force of attraction for an object 17. Physical properties- of matter can be observed without making new substances 18. Chemical properties- new substances are formed 19. Physical Change- does not entail a change compositions in chemical composition 20. Chemical Change- change in chemical composition 21. Solid- has definite shape and volume 22. Liquid- has definite volume but takes shape of the container 23. Gas- takes both the shape and volume of its container 24. Substance- always has the same composition no matter how it is made or found 25. Mixture-may have different compositions depending on how it is made or found 26. Element- composed of atoms all of one type 27. Atom-...
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