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Across 4. Matter that has a uniform and unchanging composition. 9. Independent on the amount of substance present. (Density). 11. A form of matter that flows, has a constant volume, and takes the shape of its container. 12. refers to the gaseous state of a substance that is a solid or a liquid at room temperature 13. A form of matter that flows to conform to the shape of its container and fills the entire volume of its container.

Down 1. A type of change that involves one or more substances changing into new substances. 2. Depends upon the amount of substance present (Mass). 3. A characteristic that can be observed or measure without changing the sample's composition. 5. A law stating mass is neither created nor destroyed during a chemical reaction. 6. The ability of a substance to combine or change into one or more substance. 7. The physical forms in which all matter naturally exists on earth. 8. form of matter that has its own definite shape and volume. 10. type of change that alters the physical properties of a substance but does not change its composition.