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






3. Subatomic particle without a charge; found in nucleus






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






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






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






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






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






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






10. Indicates the formation of new substances from previous substances






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






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






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






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






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






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






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






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






19. Indicates the formation of new substances from previous substances






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






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






22. Occurs when atoms share electrons






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






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






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






26. Anything that occupies space and has mass






27. Atoms that have lost or gained electrons






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






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






30. Atoms that have lost or gained electrons






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






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






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






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






35. Occurs when atoms transfer electrons to other atoms






36. Atoms that are held together by covalent bonds






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






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






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






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






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






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






43. Anything that occupies space and has mass






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






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






46. Subatomic particle without a charge; found in nucleus






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






48. Occurs when atoms transfer electrons to other atoms






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






50. Occurs when atoms share electrons