Across
- 7. Law stating when different compounds are formed by the combination of the same elements, different masses of 1 element combine witht he same mass of the other element in a ration of small whole numbers.
- 14. Law stating regardless of the amount a compound is always composed of the same proportion of elements.
- 16. Elements that have properties of metals and nonmetals.
- 17. Extremely unreactive group of eight elements.
- 20. a pure substance that cannot be broken down further by physical or chemical means.
- 22. Volume of an ideal gas at constant pressure is directly proportional to the absolute temperature.
- 23. Form of matter that fills the shape of its container, fills the container's entire volume, and is easily compressed.
- 27. A chart that organizes all known elements into a grid by increasing atomic numbers.
- 31. Law stating that mass is neither created nor destroyed but is conserved during a chemical reaction.
- 33. A percentage determined by the ratio of mass of each element to the total mass of the compound.
- 35. A technique used to seperate a homogeneous mixture based on the boiling points of the individual substances in the mixture.
- 36. A chemical substance that is present at the beginning of a chemical reaction.
- 37. Moving from one state to another without a change in the chemical composition.
- 41. A seperation ttechnique that produces pure solid particles of a substance from a solution with the dissolved substance.
- 43. The smallest unit of matter.
- 44. The amount of matter in an object.
- 45. Particles arranged in a relatively stable shape.
- 46. A type of change that alters physical properties of a substance but does not change the composition.
Down
- 1. A characteristic of matter that can be observed or measured without changing the sample's composition.
- 2. Anything that has mass & takes up space.
- 3. Name of the horizontal rows on the Periodic Table.
- 4. A physical blend of two or more pure substances where both substances keep their properties and can be physically seperated.
- 5. Substance formed as the result of a chemical reaction.
- 6. A physical property that is dependent upon the amount of substance present.
- 8. Name of the verticle columns on the Periodic Table.
- 9. Change from a solid directly to a gas with no liquid state in between.
- 10. A technique used to seperate components of a mixture based on how well each component is drawn across a surface.
- 11. The pressure and volume of a gas have an inverse relationship.
- 12. A chemical combination of two or more substances by chemical means that has different properties than the original substances.
- 13. PV=nRT
- 15. A physical propertythat remains the same no matter how much substance is present.
- 18. A mixture without a uniform composition.
- 19. Equal volumes of all gases at the same tmperature and pressure have the same number of molecules.
- 21. A technique using a porous barrier to seperate a solid from a liquid.
- 24. Distinct forms that matter exists in.
- 25. The ability or inability of a substance to combine or change into more/new substances.
- 26. A mixture that is uniform throughout.
- 28. The ratio between the pressure - volume product and absolute temperature of a gas is constant.
- 29. The majority of elements in the Periodic Table; good conducter, malleable, ductile.
- 30. A process involving one or more substances changing into new substances; a chemical reaction.
- 32. Poor conducters of heat and electricity.
- 34. The pressure of a given mass of gas varies directly with the absolute temperature of the gas when the volume is kept constant.
- 38. Exists at high temperatures and consists of charged particles.
- 39. Material that has a constant composition.
- 40. The gaseous state of a non-gas at room temperature.
- 42. Form of matter that has constant volume & takes the shape of its container.