Classification of Matter in Physics

Physical Science Chapter 15 Classification of Matter 1. Substance either an element or compound 2. Element when all the atoms in a substance are alike, the substance is an _______ 3. Compound a _____ is a substance with two or more elements combined in a fixed proportion 4. Mixture Two or more substances that can be easily separated by physical means form a _____ 5. Heterogeneous Mixture mixture of different and easily distinguishable materials 6. Homogeneous mixture contains two or more gaseous, liquid, or solid substances blended evenly; also called a solution 7. Colliods heterogeneous mixture with larger particles that never settle; colloids scatter light in the Tyndall effect 8. Suspension A heterogeneous mixture containing a liquid in which visible particles settle is called a _______ 9. Physical Proper- characteristics of a material which can be observed withty out changing the identity of the substances in the material; examples include color, shape, size, melting point, and boiling point. 10. Appearance physical description of a substance 11. Behavior how a substance acts; for example, magnetism, viscosity, ductility 12. Separate Physical properties such as size and magnetism can be used to _____ mixtures 13. Physical change change in a substance's size, shape or state of matter 14. identity substance does not change______ when it undergoes a physical change 1/3 15. distillation _______ is a process for separating a mixture by evaporating a liquid and condensing its vapor 16. Chemical proper- characteristics of a substance indicating that it can change ty chemically; for example, flammability or light sensitivity or a substance 17. chemical change when one substance changes to another substance, a _______ has occurred 18. temperature some chemical changes are indicated by ______ change, smell, or bubble formation 19. rust other chemical changes occur very slowly, such as the formation of _____ 20. separate chemical changes can be used to _______ substances such as metal from their ores 21. Weathering ______ of earth's surface involves both physical and chemical changes 22. Physical weathering big rock split into smaller ones, streams carry rock particles from one location to another 23. chemical weath- chemical changes can occur in rock when calcium carbonering ate in limestone changes to calcium hydrogen carbonate due to acid rain 24. Law of conserva- mass of all substances present before a chemical change tion of mass equals the mass of all substances after the change 25. Atoms all substances are built from ______ 26. colloid a beam of light can be seen as it passes through a ______ 27. solution a _____ is a homogeneous mixture of particles so small they cannot be seen and will not settle to the bottom of their container 2/3 28. invisible, can a beam of light is _______ as it passes through a solution but _____ be seen as it passes through a colloid 29. Physical appearance and behavior are ______ properties 30. chemical the change of one substance to another is a ______ change 31. conserved when substances go through a physical or chemical change mass is always_____ 32. heterogeneous, colloid smoke is a _____ mixture and a _______ 33. Physical proper- the fragrance of a flower is ______ ty 34. physical change distillation is a process that can separate two liquids using _____ 35. physical proper- the odor of a substance is a ______ ty 36. mixtures colloids are _____ 37. physical the freezing of water is a _____ change 38. can homogeneous mixtures _____ be separated by physical changes 39. suspensions colloids and ______ scatter light 40. physical color is a _____ property 41. not lost when a firecracker explodes mass is ______ 42. heterogeneous a suspension is a _______ mixture 43. chemical a burnt object has undergone a ______ change 3/3