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






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






3. Occurs when atoms share electrons






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






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






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






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






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






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






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






11. Occurs when atoms transfer electrons to other atoms






12. Atoms that are held together by covalent bonds






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






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






15. Indicates the formation of new substances from previous substances






16. Atoms that have lost or gained electrons






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






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






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






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






21. Anything that occupies space and has mass






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






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






24. Atoms that have lost or gained electrons






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






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






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






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






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






30. Atoms that are held together by covalent bonds






31. Occurs when atoms share electrons






32. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






39. Anything that occupies space and has mass






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






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






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






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






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






45. Indicates the formation of new substances from previous substances






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






47. Subatomic particle without a charge; found in nucleus






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






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






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