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






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






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






5. Subatomic particle without a charge; found in nucleus






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






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






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






9. Atoms that are held together by covalent bonds






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






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






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






13. Occurs when atoms share electrons






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






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






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






17. Indicates the formation of new substances from previous substances






18. Anything that occupies space and has mass






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






20. Atoms that have lost or gained electrons






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






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






23. Atoms that are held together by covalent bonds






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






25. Indicates the formation of new substances from previous substances






26. Occurs when atoms transfer electrons to other atoms






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






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






29. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






36. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






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






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






47. Occurs when atoms share electrons






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






49. Occurs when atoms transfer electrons to other atoms






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