Across
- 4. change from one state (solid or liquid or gas) to another without a change in chemical composition.
- 5. irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition
- 8. Crystallization is the solidification of atoms or molecules into a highly structured form called a crystal.
- 9. the volatilization or evaporation and subsequent condensation of a liquid.
- 13. a statement in chemistry: when two elements combine in more than one proportion to form two or more compounds the weights of one element that combine with a given weight of the other element are in the ratios of small whole numbers.
- 14. any combination of substances that has uniform composition and properties.
- 15. A mixture is a combination of two or more pure substances in which the original substances retain their chemical properties.
- 16. a substance whose atoms all have the same number of protons.
- 17. any property that is measurable, whose value describes a state of a physical system.
- 18. Any substance that has a uniform and unchanging composition is considered to be pure. Examples of pure substances include elements.
- 19. of mass states that mass is neither created nor destroyed.
- 21. an air like fluid substance which expands freely to fill any space available, irrespective of its quantity.
- 23. a table of the chemical elements arranged in order of atomic number.
- 24. a property or characteristic of a substance that is observed during a reaction in which the chemical composition or identity of the substance is changed
- 26. a homogeneous mixture composed of two or more substances.
- 27. An extensive property is a property of matter that changes as the amount of matter changes.
Down
- 1. the separation of a mixture by passing it in solution or suspension or as a vapor.
- 2. a substance that flows freely but is of constant volume
- 3. sometimes called Proust's law.
- 4. Any change that occurs without altering the chemical composition of a substance is a physical change.
- 6. is a bulk property, meaning that it is a physical property of a system that does not depend on the system size or the amount of material in the system.
- 7. type of phase transition, or a change in a state of matter, just like melting, freezing, and evaporation.
- 10. one of the distinct forms in which matter can exist
- 11. a substance formed when two or more chemical elements are chemically bonded together.
- 12. is one way of representing the concentration of an element in a compound or a component in a mixture.
- 20. is any of various mechanical, physical or biological operations that separate solids from fluids by adding a medium through which only the fluid can pass.
- 22. a substance diffused or suspended in the air, especially one normally liquid or solid.
- 25. firm and stable in shape; not liquid or fluid.