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Basic Chemistry

Subjects : science, chemistry
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 unstable atom in which the nucleus decays (breaks down) releasing particles and energy






2. Substance made of two or more elements & one being carbon






3. Occurs when atoms transfer electrons to other atoms






4. An unstable atom in which the nucleus decays (breaks down) releasing particles and energy






5. Subatomic particle having a positive charge; found in nucleus






6. Atoms that are held together by covalent bonds






7. Indicates the formation of new substances from previous substances






8. The starting materials for a reaction; found on left side of chemical equation






9. Occurs when atoms transfer electrons to other atoms






10. The smallest particle of an element that retains the properties of the element






11. Subatomic particle without a charge; found in nucleus






12. Indicates the number and types of atoms in a molecule






13. Electrons in the outermost energy level; they are involved in bond formation






14. Identifies a specific element; equals the number of protons in an atom of each element






15. Indicates the formation of new substances from previous substances






16. A covalent bond in which one pair of electrons is shared






17. The smallest particle of an element that retains the properties of the element






18. Protons and neutrons together; make up the center of an atom






19. Interaction of substances that lead to the formation of new substances






20. Shows the number and types of atoms in a molecule and how they are arranged






21. Identifies a specific element; equals the number of protons in an atom of each element






22. Interaction of substances that lead to the formation of new substances






23. Ending materials of a reaction; found on right side of chemical equation






24. Occurs when atoms share electrons






25. Subatomic particle having a positive charge; found in nucleus






26. A pure substance that cannot be broken down into other substances by chemical reactions






27. Subatomic particle having a negative charge; not in nucleus but surrounds it






28. Indicates the number and types of atoms in a molecule






29. Atoms having the same numbers of protons but different numbers of neutrons






30. Occurs when atoms share electrons






31. A covalent bond in which four valence electrons are shared between two atoms






32. Ending materials of a reaction; found on right side of chemical equation






33. Atoms that are held together by covalent bonds






34. Anything that occupies space and has mass






35. Subatomic particle having a negative charge; not in nucleus but surrounds it






36. A covalent bond in which four valence electrons are shared between two atoms






37. Atoms having the same numbers of protons but different numbers of neutrons






38. Substance made of two or more elements & one being carbon






39. Electrons in the outermost energy level; they are involved in bond formation






40. Shows the number and types of atoms in a molecule and how they are arranged






41. Atoms that have lost or gained electrons






42. The starting materials for a reaction; found on left side of chemical equation






43. A pure substance that cannot be broken down into other substances by chemical reactions






44. Substance made of two or more elements & none of which is carbon






45. Protons and neutrons together; make up the center of an atom






46. Atoms that have lost or gained electrons






47. Subatomic particle without a charge; found in nucleus






48. Anything that occupies space and has mass






49. Substance made of two or more elements & none of which is carbon






50. A covalent bond in which one pair of electrons is shared