Chem I Matter Vocab

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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.

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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.