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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 & none of which is carbon






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






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






4. Atoms that have lost or gained electrons






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






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






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






8. Anything that occupies space and has mass






9. Atoms that are held together by covalent bonds






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






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






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






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






14. Indicates the formation of new substances from previous substances






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






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






17. Atoms that are held together by covalent bonds






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






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






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






21. Subatomic particle without a charge; found in nucleus






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






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






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






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






26. Subatomic particle without a charge; found in nucleus






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






28. Occurs when atoms share electrons






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






30. Indicates the formation of new substances from previous substances






31. Occurs when atoms share electrons






32. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






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






43. Atoms that have lost or gained electrons






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






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






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






47. Anything that occupies space and has mass






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






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






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