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






4. Anything that occupies space and has mass






5. Atoms that are held together by covalent bonds






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






7. Subatomic particle without a charge; found in nucleus






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






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






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






11. Anything that occupies space and has mass






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






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






14. Atoms that have lost or gained electrons






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






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






17. Occurs when atoms transfer electrons to other atoms






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






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






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






21. Atoms that have lost or gained electrons






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






23. Subatomic particle without a charge; found in nucleus






24. Occurs when atoms share electrons






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






26. Atoms that are held together by covalent bonds






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






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






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






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






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






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






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






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






35. Occurs when atoms transfer electrons to other atoms






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






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






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






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






40. Indicates the formation of new substances from previous substances






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






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






43. Indicates the formation of new substances from previous substances






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






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






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






47. Occurs when atoms share electrons






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






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






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