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Pre - AP Chemistry

Subjects : pre-ap, science
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. An explanation of how phenomena occur and how data or events are related






2. The measurement system accepted worldwide

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3. A substance that reacts in a chemical change






4. Atoms of the same element that have different masses






5. A unit of mass that is exactly 1/12 the mass of a carbon-12atom - or 1.660 540 × 10-27 kg






6. A specific portion of matter in a given region of space that has been selected for study during an experiment or observation






7. A pure substance made of only one kind of atom






8. The general term for any isotope of any element






9. Any substance that has a definite composition






10. A vertical column of the periodic table






11. The mass of one mole of a pure substance






12. The 14 elements with the atomic numbers 58-71.






13. The d-block elements are metals with typical metallic properties.






14. A ratio derived from the equality between two different units that can be used to convert from one unit to the other






15. A substance that has a fixed composition and differs from a mixture in that every sample of a given pure substance has exactly the same characteristic properties and composition






16. A property that does not depend on the amount of matter present






17. A reaction in which one or more substances are converted into different substances






18. The arrangement of electrons in an atom






19. A testable statement






20. Mass is neither created nor destroyed duringordinary chemical or physical reactions






21. A substance that is formed by a chemical change






22. A substance that is made from the atoms of two or more elements that are chemically bonded






23. Not having a uniform composition throughout






24. The 14 elements with the atomic numbers 90-103.






25. The physical and chemical properties of the elements are periodic functions of their atomic numbers.






26. The smallest unit of an element that maintains the properties of that element






27. A change in a substance that does not involve a change in the identity of the substance






28. Number of waves that pass a given point in a specific time - usually one second.






29. An electron occupies the lowest-energy orbital that can receive it






30. A high-temperature physical state of matter in which atoms lose their electrons






31. The elements of group 2 of the periodic table.






32. An element that is a poor conductor of heat and electricity






33. Any process that results in the formation of an ion.






34. The study of the composition - structure - and properties of matter and the changes it undergoes






35. A form of energy that exhibits wavelike behavior as it travels through space (3.00x108 m/s)






36. A logical approach to solving problems by observing and collecting data - formulating hypotheses - testing hypotheses - and formulating theories that are supported by data






37. Having a uniform composition throughout






38. A positive ion.






39. The total number of protons and neutrons in the nucleus of an isotope






40. The amount of a substance that contains as many particles as there areatoms in exactly 12 g of carbon-12






41. Particle of electromagnetic radiation having zero mass and carrying a quantum of energy.






42. Numbers written in the form M ×10 number greater than or equal to 1 but less than 10 and n is a whole number






43. The emission of a continuous range of frequencies of electromagnetic radiation.






44. A characteristic that can be observed or measured without changing the identity of the substance






45. The state of matter in which a substance has neither definite volume nor definite shape






46. A measure of the gravitational pull on matter






47. The total amount of energy level an atom has.






48. State in which an atom has a higher potential energy than it has in it's ground state.






49. An element that has some characteristics of metals and some characteristics of nonmetals






50. A unit that is a combination of SI base units