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






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






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






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






6. Atoms that are held together by covalent bonds






7. Atoms that have lost or gained electrons






8. Subatomic particle without a charge; found in nucleus






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






10. Substance containing two or more elements chemically combined in a fixed ratio






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






12. Occurs when atoms transfer electrons to other atoms






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






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






15. Indicates the formation of new substances from previous substances






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






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






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






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






20. Anything that occupies space and has mass






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






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






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






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






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






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






27. Occurs when atoms share electrons






28. Occurs when atoms transfer electrons to other atoms






29. Substance containing two or more elements chemically combined in a fixed ratio






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






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






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






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






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






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






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






37. Atoms that are held together by covalent bonds






38. Anything that occupies space and has mass






39. Subatomic particle without a charge; found in nucleus






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






41. Occurs when atoms share electrons






42. Atoms that have lost or gained electrons






43. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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