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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. Indicates the formation of new substances from previous substances






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






3. Occurs when atoms transfer electrons to other atoms






4. Anything that occupies space and has mass






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






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






7. Atoms that are held together by covalent bonds






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






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






10. Atoms that are held together by covalent bonds






11. Subatomic particle without a charge; found in nucleus






12. Anything that occupies space and has mass






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






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






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






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






17. Atoms that have lost or gained electrons






18. Occurs when atoms share electrons






19. Occurs when atoms transfer electrons to other atoms






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






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






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






23. Occurs when atoms share electrons






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






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






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






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






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






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






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






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






32. Indicates the formation of new substances from previous substances






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






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






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






36. Atoms that have lost or gained electrons






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






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






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






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






41. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






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