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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. Which suborbital. (Py - Px - Pz)






2. The energy change that occurs when an electron is acquired by a neutral atom.






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






4. A horizontal row of elements in the periodic table






5. The ratio of mass to volume or mass divided by volume






6. A chemical compound contains the same elementsin exactly the same proportions by mass regardless of the size of the sample orthe source of the compound






7. The general term for any isotope of any element






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






9. An atom or group of bonded atoms that has a positive or negative charge.






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






11. The state of matter in which the substance has a definite volume but an indefinite shape






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






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






14. Specify the properties of atomic orbitals and the properties of electrons in orbitals.






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






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






17. The ability of a substance to undergo a change that transforms it into a different substance






18. One wave per second.






19. A negative ion.






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






21. The arrangement of electrons in an atom






22. A measure of the ability of an atom in a chemical compound to attract electrons from another atom in the compound.






23. If two or more different compounds arecomposed of the same two elements - then the ratio of the masses of the secondelement combined with a certain mass of the first element is always a ratio ofsmall whole numbers






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






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






26. Narrow beam of the emitted light was shined through a prism - it was separated into four specific colors of the visible spectrum.






27. A property that depends on the amount of matter that is present






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






29. Any substance that has a definite composition






30. Which way it spins. (up or down)






31. Not having a uniform composition throughout






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






33. A physical change of a substance from one state to another






34. The weighted average of the atomic masses of thenaturally occurring isotopes of an element






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






36. Two quantities that have a constant mathematical product






37. States that it is impossible to determine simultaneously both the position and velocity of an electron or any other particle.






38. A broad generalization that explains a body of facts or phenomena






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






40. Orbitals of equal energy are each occupied by one electron before any orbital is occupied by a second electron - and all electrons in singly occupied orbitals must have the same spin state.

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






42. An explanation of how phenomena occur and how data or events are related






43. A short-range proton-neutron - proton-proton - or neutrorce that holds the nuclear particles together






44. A change in which one or more substances are converted into different substances






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






46. Any digit in a measurement that is known with certainty plus one final digit - which is somewhat uncertain or is estimated






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






48. A testable statement






49. A positive ion.






50. An element that is a good conductor of heat and electricity