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






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






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






5. Occurs when atoms share electrons






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






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






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






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






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






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






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






13. Occurs when atoms transfer electrons to other atoms






14. Anything that occupies space and has mass






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






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






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






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






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






20. Occurs when atoms share electrons






21. Atoms that are held together by covalent bonds






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






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






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






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






26. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






34. Occurs when atoms transfer electrons to other atoms






35. Indicates the formation of new substances from previous substances






36. Subatomic particle without a charge; found in nucleus






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






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






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






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






41. Atoms that have lost or gained electrons






42. Atoms that have lost or gained electrons






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






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






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






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






47. Anything that occupies space and has mass






48. Subatomic particle without a charge; found in nucleus






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






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