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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 & one being carbon






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






3. Atoms that are held together by covalent bonds






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






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






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






7. Anything that occupies space and has mass






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






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






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






11. Occurs when atoms transfer electrons to other atoms






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






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






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






15. Atoms that are held together by covalent bonds






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






17. Subatomic particle without a charge; found in nucleus






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






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






20. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






30. Atoms that have lost or gained electrons






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






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






33. Anything that occupies space and has mass






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






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






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






37. Occurs when atoms share electrons






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






39. Atoms that have lost or gained electrons






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






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






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






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






44. Subatomic particle without a charge; found in nucleus






45. Occurs when atoms share electrons






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






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






48. Indicates the formation of new substances from previous substances






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






50. Indicates the formation of new substances from previous substances