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Chapter 4 Vocabulary
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matter: takes up space
element: a pure substance that cant be broke down
trace element: critical to health, makes up 0.01% of body mass
compuond: contains 2 or more elements that are chemically combined
atom: smallest part of a element
proton: subatomic particle with a POSITIVE charge
electron: subatomic particle with a NEGATIVE charge
neutron: subatomic particle with NO charge
atomic number: number of protons in a nucleus
isotope: one of several forms of a element
radioactive isotope: has a decaying nucleus
ionic bond: electron transfer from one atom to another atom
covalent bond: its when 2 atoms share a electron
molecule: two or more atoms held together by covalent bonds
chemical reaction: breaking of old and formation of new bonds that results in new substances
reactant: starting material for a chemical reaction
products: ending material of a chemical reaction
polar molecule: opposite ends have opposite electric charges
hydrogen bond: weak attraction of a slightly positive atom to a slightly negative portion of another molecule
cohesion: when the same kind of molecule stick together
adhesion: when unlike molecules attract
thermal energy: energy associated with the random movement of atoms and molcules
temperature: energy associated with the random movement of particles in a substance
solution: uniform mixture of 2 or more substances
solvent: substance that dissolves the other substance and is present in a greater amount
solute: substance that is dissolved and is present in a lesser amount
aqueous solution: solution in which water is the solvent
pH: the acidity of a solution
acid: compound that donates H+ ions to an aqueous soulution
base: compund that removes H+ ions from a aqueous solution
pH scale: a range of numbers used to describe how acidic or basic a solution is
buffers: a substance that maintains a fairly constant pH in a solution
Chapter 4 Vocabulary
Across:1. | a range of numbers used to describe how acidic or basic a solution is | 2. | has a decaying nucleus | 4. | substance that is dissolved and is present in a lesser amount | 7. | takes up space | 11. | contains 2 or more elements that are chemically combined | 12. | when unlike molecules attract | 20. | number of protons in a nucleus | 22. | one of several forms of a element | 23. | when the same kind of molecule stick together | 24. | energy associated with the random movement of particles in a substance | 27. | two or more atoms held together by covalent bonds | 28. | subatomic particle with NO charge | 29. | compound that donates H+ ions to an aqueous soulution | 30. | breaking of old and formation of new bonds that results in new substances | 31. | electron transfer from one atom to another atom |
| | Down:1. | ending material of a chemical reaction | 3. | solution in which water is the solvent | 5. | energy associated with the random movement of atoms and molcules | 6. | critical to health, makes up 0.01% of body mass | 8. | weak attraction of a slightly positive atom to a slightly negative portion of another molecule | 9. | subatomic particle with a POSITIVE charge | 10. | compund that removes H+ ions from a aqueous solution | 13. | opposite ends have opposite electric charges | 14. | uniform mixture of 2 or more substances | 15. | a pure substance that cant be broke down | 16. | substance that dissolves the other substance and is present in a greater amount | 17. | its when 2 atoms share a electron | 18. | smallest part of a element | 19. | a substance that maintains a fairly constant pH in a solution | 21. | the acidity of a solution | 25. | subatomic particle with a NEGATIVE charge | 26. | starting material for a chemical reaction |
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© 2013
PuzzleFast.com, Noncommercial Use Only
Chapter 4 Vocabulary
Across:1. | a range of numbers used to describe how acidic or basic a solution is | 2. | has a decaying nucleus | 4. | substance that is dissolved and is present in a lesser amount | 7. | takes up space | 11. | contains 2 or more elements that are chemically combined | 12. | when unlike molecules attract | 20. | number of protons in a nucleus | 22. | one of several forms of a element | 23. | when the same kind of molecule stick together | 24. | energy associated with the random movement of particles in a substance | 27. | two or more atoms held together by covalent bonds | 28. | subatomic particle with NO charge | 29. | compound that donates H+ ions to an aqueous soulution | 30. | breaking of old and formation of new bonds that results in new substances | 31. | electron transfer from one atom to another atom |
| | Down:1. | ending material of a chemical reaction | 3. | solution in which water is the solvent | 5. | energy associated with the random movement of atoms and molcules | 6. | critical to health, makes up 0.01% of body mass | 8. | weak attraction of a slightly positive atom to a slightly negative portion of another molecule | 9. | subatomic particle with a POSITIVE charge | 10. | compund that removes H+ ions from a aqueous solution | 13. | opposite ends have opposite electric charges | 14. | uniform mixture of 2 or more substances | 15. | a pure substance that cant be broke down | 16. | substance that dissolves the other substance and is present in a greater amount | 17. | its when 2 atoms share a electron | 18. | smallest part of a element | 19. | a substance that maintains a fairly constant pH in a solution | 21. | the acidity of a solution | 25. | subatomic particle with a NEGATIVE charge | 26. | starting material for a chemical reaction |
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© 2013
PuzzleFast.com, Noncommercial Use Only