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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. Anything that occupies space and has mass






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






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






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






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






7. Indicates the formation of new substances from previous substances






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






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






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






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






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






13. Atoms that are held together by covalent bonds






14. Anything that occupies space and has mass






15. Indicates the formation of new substances from previous substances






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






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






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






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






20. Occurs when atoms share electrons






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






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






23. Atoms that have lost or gained electrons






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






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






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






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






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






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






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






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






34. Occurs when atoms share electrons






35. Subatomic particle without a charge; found in nucleus






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






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






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






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






40. Occurs when atoms transfer electrons to other atoms






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






42. Subatomic particle without a charge; found in nucleus






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






44. Occurs when atoms transfer electrons to other atoms






45. Atoms that have lost or gained electrons






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






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






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






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






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