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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. Anything that occupies space and has mass






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






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






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






5. Occurs when atoms share electrons






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






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






8. Indicates the formation of new substances from previous substances






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






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






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






12. Anything that occupies space and has mass






13. Atoms that have lost or gained electrons






14. Occurs when atoms share electrons






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






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






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






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






19. Atoms that are held together by covalent bonds






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






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






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






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






24. Subatomic particle without a charge; found in nucleus






25. Atoms that have lost or gained electrons






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






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






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






29. Atoms that are held together by covalent bonds






30. Occurs when atoms transfer electrons to other atoms






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






32. Occurs when atoms transfer electrons to other atoms






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






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






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






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






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






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






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






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






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






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






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






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






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






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






47. Subatomic particle without a charge; found in nucleus






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






49. Indicates the formation of new substances from previous substances






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