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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. A substance that reacts in a chemical change






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






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






4. The measurement system accepted worldwide

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5. Something that has magnitude - size - or amount






6. The p-block elements together with the s-block elements.






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






8. Describes mathematically the wave properties of electrons and other very small particles.






9. Emission of electrons from a metal when light shines on a metal.






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






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






12. Minimum quantity of energy that can be lost or gained by an atom.






13. The suborbitals of an atom. (S - P - D - F)






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






15. Which suborbital. (Py - Px - Pz)






16. The number of protons in the nucleus of each atom of an element






17. Lowest energy state of an atom.






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






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






20. 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






21. The amount of space occupied by an object






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






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






24. The closeness of measurements to the correct or accepted value of the quantity measured






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






26. Having a uniform composition throughout






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






28. The arrangement of electrons in an atom






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






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






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






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






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






34. 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






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






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






37. 6.022 1367 × 1023; the number of particles in exactly onemole of a pure substance

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38. A measure of the amount of matter






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






40. The state of matter in which the substance has definite volume and definite shape






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






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






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






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






45. A blend of two or more kinds of matter - each of which retains its own identity and properties






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






47. The general term for any isotope of any element






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






49. 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






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






Can you answer 50 questions in 15 minutes?



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