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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. Subatomic particle having a positive charge; found in nucleus






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






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






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






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






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






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






8. Anything that occupies space and has mass






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






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






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






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






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






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






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






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






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






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






19. Indicates the formation of new substances from previous substances






20. Atoms that are held together by covalent bonds






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






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






23. Occurs when atoms share electrons






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






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






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






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






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






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






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






31. Occurs when atoms share electrons






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






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. Occurs when atoms transfer electrons to other atoms






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






37. Atoms that have lost or gained electrons






38. Anything that occupies space and has mass






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






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






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






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






43. Subatomic particle without a charge; found in nucleus






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






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






46. Atoms that have lost or gained electrons






47. Indicates the formation of new substances from previous substances






48. Occurs when atoms transfer electrons to other atoms






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






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