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






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






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






4. Anything that occupies space and has mass






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






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






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






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






9. Occurs when atoms transfer electrons to other atoms






10. Indicates the formation of new substances from previous substances






11. Atoms that are held together by covalent bonds






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






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






14. Occurs when atoms share electrons






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






16. Anything that occupies space and has mass






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 negative charge; not in nucleus but surrounds it






20. Occurs when atoms share electrons






21. Atoms that are held together by covalent bonds






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






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






24. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






31. Subatomic particle without a charge; found in nucleus






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






33. Atoms that have lost or gained electrons






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






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






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






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






38. Indicates the formation of new substances from previous substances






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






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






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






42. Atoms that have lost or gained electrons






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






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






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






46. Subatomic particle without a charge; found in nucleus






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






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






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






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