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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 containing two or more elements chemically combined in a fixed ratio






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






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






4. Indicates the formation of new substances from previous substances






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






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






7. Atoms that have lost or gained electrons






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






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






10. Indicates the formation of new substances from previous substances






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






12. Anything that occupies space and has mass






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






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






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






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






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






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






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






20. Occurs when atoms transfer electrons to other atoms






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






22. Anything that occupies space and has mass






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






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






25. Occurs when atoms share electrons






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






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






28. Atoms that are held together by covalent bonds






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






30. Occurs when atoms transfer electrons to other atoms






31. Occurs when atoms share electrons






32. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






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






42. Subatomic particle without a charge; found in nucleus






43. Atoms that are held together by covalent bonds






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






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






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






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






48. Atoms that have lost or gained electrons






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






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