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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. Any substance that has a definite composition






2. A measure of the gravitational pull on matter






3. The closeness of a set of measurements of the same quantity made in the same way






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






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






6. The measurement system accepted worldwide


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






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






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






10. Atoms of the same element that have different masses






11. A 3D region around the nucleus that indicates the probable location of an electron.






12. 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






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






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






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






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






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






18. The electrons available to be lost - gained - or shared in the formation of chemical compounds.






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






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






21. Combination of all the forms of electromagnetic radiation.






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






23. 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






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






25. Distance between corresponding points on adjacent waves.






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






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






28. Two quantities that give a constant value when one is divided by the other






29. A vertical column of the periodic table






30. The elements of group 17 of the periodic table.






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






32. Something that has magnitude - size - or amount






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






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






35. The arrangement of electrons in an atom






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






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






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






39. The general term for any isotope of any element






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






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






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






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






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






45. A substance that reacts in a chemical change






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






47. The Group 18 elements (helium - neon - argon - krypton - xenon - and radon)






48. A measure of the amount of matter






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






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