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Allen's Vocab
22
Atom : Basic unit of matter.
Nucleus : The center of an atom which contains the protons and neutrons; in cells, structure that contains the cell's genetic material (DNA) and controls the cell's activities.
Electron : Negatively charged particle; located outside the atomic nucleus.
Element : Substance consisting of only one type of atom.
Isotope : Atom of and element that has a number of neutrons different from that of other atoms of the same element.
Ion : Atom of an element that has a positive or negative charge/
Ionic Bond : Bond formed when one or more electrons are transferred from one atom to another.
Compound : Substance formed by the chemical combination of two or more in definite proportions.
Covalent Bond : Bond formed by the sharing of electrons between atoms.
Cohesion : Attraction between molecules of the same substance.
Molecule : Smallest unit of most compounds.
Van der Waals Forces : A slight attraction that develops between the oppositely charged regions of nearby molecules.
Adhesion : Attraction between molecules of different substances.
Acid : Compound that forms hydrogen ions in a solution.
Base : Compound that produces hydroxide ions i a solution.
Buffer : Weak acid or base that can react with strong acids or bases to help prevent sharp, sudden changes in pH.
Solution : Mixture of two or more substances in which the molecules of the substances are evenly distributed.
Solvent : Substance in which a solute is dissolved to form a solution.
Solute : Substance that is dissolved in a solvent to make a solution.
Suspension : Mixture of water and undissolved materials.
Mixture : Material composed of two or more elements or compounds that are physically mixed together but not chemically combined.
pH Scale : Measurement system used to indicate the concentration of hydrogen ions in solution
Allen's Vocab
Across:7. | The center of an atom which contains the protons and neutrons; in cells, structure that contains the cell's genetic material (DNA) and controls the cell's activities. | 8. | Substance consisting of only one type of atom. | 12. | Compound that produces hydroxide ions i a solution. | 13. | Measurement system used to indicate the concentration of hydrogen ions in solution | 14. | Smallest unit of most compounds. | 16. | Compound that forms hydrogen ions in a solution. | 18. | Bond formed by the sharing of electrons between atoms. | 20. | Substance that is dissolved in a solvent to make a solution. | 21. | Negatively charged particle; located outside the atomic nucleus. | 22. | Mixture of water and undissolved materials. |
| | Down:1. | Attraction between molecules of the same substance. | 2. | Attraction between molecules of different substances. | 3. | A slight attraction that develops between the oppositely charged regions of nearby molecules. | 4. | Bond formed when one or more electrons are transferred from one atom to another. | 5. | Material composed of two or more elements or compounds that are physically mixed together but not chemically combined. | 6. | Weak acid or base that can react with strong acids or bases to help prevent sharp, sudden changes in pH. | 9. | Substance formed by the chemical combination of two or more in definite proportions. | 10. | Mixture of two or more substances in which the molecules of the substances are evenly distributed. | 11. | Atom of and element that has a number of neutrons different from that of other atoms of the same element. | 15. | Substance in which a solute is dissolved to form a solution. | 17. | Atom of an element that has a positive or negative charge/ | 19. | Basic unit of matter. |
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© 2015
PuzzleFast.com, Noncommercial Use Only
Allen's Vocab
Across:7. | The center of an atom which contains the protons and neutrons; in cells, structure that contains the cell's genetic material (DNA) and controls the cell's activities. | 8. | Substance consisting of only one type of atom. | 12. | Compound that produces hydroxide ions i a solution. | 13. | Measurement system used to indicate the concentration of hydrogen ions in solution | 14. | Smallest unit of most compounds. | 16. | Compound that forms hydrogen ions in a solution. | 18. | Bond formed by the sharing of electrons between atoms. | 20. | Substance that is dissolved in a solvent to make a solution. | 21. | Negatively charged particle; located outside the atomic nucleus. | 22. | Mixture of water and undissolved materials. |
| | Down:1. | Attraction between molecules of the same substance. | 2. | Attraction between molecules of different substances. | 3. | A slight attraction that develops between the oppositely charged regions of nearby molecules. | 4. | Bond formed when one or more electrons are transferred from one atom to another. | 5. | Material composed of two or more elements or compounds that are physically mixed together but not chemically combined. | 6. | Weak acid or base that can react with strong acids or bases to help prevent sharp, sudden changes in pH. | 9. | Substance formed by the chemical combination of two or more in definite proportions. | 10. | Mixture of two or more substances in which the molecules of the substances are evenly distributed. | 11. | Atom of and element that has a number of neutrons different from that of other atoms of the same element. | 15. | Substance in which a solute is dissolved to form a solution. | 17. | Atom of an element that has a positive or negative charge/ | 19. | Basic unit of matter. |
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© 2015
PuzzleFast.com, Noncommercial Use Only