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






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






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






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






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






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






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






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






9. Indicates the formation of new substances from previous substances






10. Indicates the formation of new substances from previous substances






11. Atoms that have lost or gained electrons






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






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






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






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






16. Occurs when atoms transfer electrons to other atoms






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






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






19. Anything that occupies space and has mass






20. Subatomic particle without a charge; found in nucleus






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






22. Occurs when atoms transfer electrons to other atoms






23. Anything that occupies space and has mass






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






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






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






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






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






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






30. Subatomic particle without a charge; found in nucleus






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






32. Occurs when atoms share electrons






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






34. Atoms that have lost or gained electrons






35. Occurs when atoms share electrons






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






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






38. Atoms that are held together by covalent bonds






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






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






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






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






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






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






45. Atoms that are held together by covalent bonds






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






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






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






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






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