CHEM 120 Final Exam 1 GRADED A+ (ACTUAL EXAM ) Questions and Answers (Solved)

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1. define matter Answer: anything that has mass and takes up space 2. what is not considered matter? Answer: light, heat, electricity 3. definite shape, definite volume Answer: solid 4. indefini... te shape, definite volume Answer: liquid 5. indefinite shape, indefinite volume Answer: gas 6. pure substance Answer: one substance; definite and constant composition; can't beseparated into 2 kinds of matter by physical means; single kind of matter 7. heterogeneous mixture Answer: nonuniform in appearance; visibly different phases 8. homogeneous mixture Answer: visibly one distinct phase; uniform properties 9. examples of pure substances Answer: water, sugar, table salt 10. examples of heterogeneous mixtures Answer: trail mix, chocolate chip cookies, cerealand mix 11. examples of homogeneous mixtures Answer: chocolate milk, orange juice, salt water 12. element v compound Answer: can't be broken down into simpler substances by chemical or physical means -v- can be broken down into elements by chemical, but not physical means 13. mixture v compound Answer: physical combinations of substances -v- chemical com-bination of substances 14. most abundant elements in the universe as a whole plus in earth's crustAnswer: hydrogen and oxygen 15. two most abundant elements in the earth's crust Answer: oxygen and silicon [Show More]

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