1:00
en
CR
Chemical and Physical Properties and Changes
14
physical property : property of a compound that can change without involving a change in chemical composition; examples are the melting point and boiling point.
chemical property : any of a chemical's properties that become evident during a chemical reactions; examples are reactivity and flammability.
physical change : any change not involving a change in the substance's chemical identity. Includes a change from one state (solid or liquid or gas) to another without a change in chemical composition.
chemical change : any process determined by the atomic and molecular composition and structure of the substances involved
element : a substance composed of atoms having an identical number of protons in each nucleus. Elements cannot be reduced to simpler substances by normal chemical means.
pure substance : a sample of matter, either an element or a compound, that consists of only one component with definite physical and chemical properties and a definite composition.
compound : a pure, macroscopically homogeneous substance consisting of atoms or ions of two or more different elements in definite proportions that cannot be separated by physical means. A compound usually has properties unlike those of its constituent elements.
mixture : a composition of two or more substances that are not chemically combined with each other and are capable of being separated.
solution : a homogeneous mixture of two or more substances, which may be solids, liquids, gases, or a combination of these.
heterogeneous : consisting of dissimilar parts. Heterogeneous mixtures have distinguishable phases.
homogeneous : uniform in structure or composition throughout. Homogeneous mixtures have atoms and molecules interspersed.
alloy : a homogeneous mixture or solid solution of two or more metals, the atoms of one replacing or occupying interstitial positions between the atoms of the other: Brass is an alloy of zinc and copper.
distillation : the evaporation and subsequent collection of a liquid by condensation as a means of purification.
density : the mass per unit volume of a substance. Commonly measured in grams per mililiter (g/mL) or grams per cubic centimeter (g/cm³)
Chemical and Physical Properties and Changes
Across:5. | a composition of two or more substances that are not chemically combined with each other and are capable of being separated. | 7. | the evaporation and subsequent collection of a liquid by condensation as a means of purification. | 9. | a homogeneous mixture of two or more substances, which may be solids, liquids, gases, or a combination of these. | 10. | uniform in structure or composition throughout. Homogeneous mixtures have atoms and molecules interspersed. |
| 11. | a pure, macroscopically homogeneous substance consisting of atoms or ions of two or more different elements in definite proportions that cannot be separated by physical means. A compound usually has properties unlike those of its constituent elements. | 12. | a sample of matter, either an element or a compound, that consists of only one component with definite physical and chemical properties and a definite composition. | 14. | property of a compound that can change without involving a change in chemical composition; examples are the melting point and boiling point. |
| | Down:1. | the mass per unit volume of a substance. Commonly measured in grams per mililiter (g/mL) or grams per cubic centimeter (g/cm³) | 2. | any process determined by the atomic and molecular composition and structure of the substances involved | 3. | any of a chemical's properties that become evident during a chemical reactions; examples are reactivity and flammability. | 4. | a homogeneous mixture or solid solution of two or more metals, the atoms of one replacing or occupying interstitial positions between the atoms of the other: Brass is an alloy of zinc and copper. |
| 6. | consisting of dissimilar parts. Heterogeneous mixtures have distinguishable phases. | 8. | any change not involving a change in the substance's chemical identity. Includes a change from one state (solid or liquid or gas) to another without a change in chemical composition. | 13. | a substance composed of atoms having an identical number of protons in each nucleus. Elements cannot be reduced to simpler substances by normal chemical means. |
| |
© 2016
PuzzleFast.com, Noncommercial Use Only
Chemical and Physical Properties and Changes
Across:5. | a composition of two or more substances that are not chemically combined with each other and are capable of being separated. | 7. | the evaporation and subsequent collection of a liquid by condensation as a means of purification. | 9. | a homogeneous mixture of two or more substances, which may be solids, liquids, gases, or a combination of these. | 10. | uniform in structure or composition throughout. Homogeneous mixtures have atoms and molecules interspersed. |
| 11. | a pure, macroscopically homogeneous substance consisting of atoms or ions of two or more different elements in definite proportions that cannot be separated by physical means. A compound usually has properties unlike those of its constituent elements. | 12. | a sample of matter, either an element or a compound, that consists of only one component with definite physical and chemical properties and a definite composition. | 14. | property of a compound that can change without involving a change in chemical composition; examples are the melting point and boiling point. |
| | Down:1. | the mass per unit volume of a substance. Commonly measured in grams per mililiter (g/mL) or grams per cubic centimeter (g/cm³) | 2. | any process determined by the atomic and molecular composition and structure of the substances involved | 3. | any of a chemical's properties that become evident during a chemical reactions; examples are reactivity and flammability. | 4. | a homogeneous mixture or solid solution of two or more metals, the atoms of one replacing or occupying interstitial positions between the atoms of the other: Brass is an alloy of zinc and copper. |
| 6. | consisting of dissimilar parts. Heterogeneous mixtures have distinguishable phases. | 8. | any change not involving a change in the substance's chemical identity. Includes a change from one state (solid or liquid or gas) to another without a change in chemical composition. | 13. | a substance composed of atoms having an identical number of protons in each nucleus. Elements cannot be reduced to simpler substances by normal chemical means. |
| |
© 2016
PuzzleFast.com, Noncommercial Use Only