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






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






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






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






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






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






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






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






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






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






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






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






14. Anything that occupies space and has mass






15. Atoms that have lost or gained electrons






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






17. Atoms that are held together by covalent bonds






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






19. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






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






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






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






31. Occurs when atoms share electrons






32. Atoms that are held together by covalent bonds






33. Indicates the formation of new substances from previous substances






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






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






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






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






38. Subatomic particle without a charge; found in nucleus






39. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






45. Occurs when atoms share electrons






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






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






48. Occurs when atoms transfer electrons to other atoms






49. Atoms that have lost or gained electrons






50. Occurs when atoms transfer electrons to other atoms