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






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






4. Subatomic particle without a charge; found in nucleus






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






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






7. Occurs when atoms share electrons






8. Occurs when atoms share electrons






9. Atoms that are held together by covalent bonds






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






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






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






13. Indicates the formation of new substances from previous substances






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






15. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






24. Occurs when atoms transfer electrons to other atoms






25. Atoms that are held together by covalent bonds






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






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






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






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






30. Anything that occupies space and has mass






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






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






33. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






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






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






42. Anything that occupies space and has mass






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






44. Atoms that have lost or gained electrons






45. Indicates the formation of new substances from previous substances






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






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






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






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






50. Atoms that have lost or gained electrons