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35 Cards in this Set
- Front
- Back
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Flammability |
a material's ability to burn in the presence of oxygen |
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Malleability |
a bility of a substance to be hammered without shattering |
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Viscosity |
the tendency of a liquid to keep from flowing (its resistance to flow) |
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Periodic Tabe symbol for gold |
Au |
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How does Filtration work |
the seperation of particles based on its size |
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What is distillation |
the separation of substances based on their boioing points |
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Physical change |
when some of the the properties of materials change but the substance of the material looks the same. |
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Colloids |
when intermidiate in size particles mix with smaller sived particles. EX: Milk and fog |
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How do if a change is chemical? |
The composition of a substance changes. |
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How do you know if a change is physical |
The composition of a substance changes |
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What is reactivity |
How readily a substance combines chemically with an other substance |
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what is a chemical property |
any ability to produce a change in the composition of a material |
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what is a chemical change |
when a substance reacts and forms one or more new subsances |
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what is precipitate |
any solid thea forms and seperates from a liquid mixture |
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what is an element |
a substance that cannot be broken down into smaller substances |
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Homogeneous mixture |
when the mixture's substances are so evenly distributed that it is difficult to distinguish one substance from another |
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suspension |
heterogenous mixture that seperates into layers over time |
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pure substance |
a substance |
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How can you classify a mixture |
Based on particle sizes you can classify a mixture |
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What are the physical properties |
Viscosity, conductivity, malleabillity, hadness, melting, boiling points, and density |
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What are three common types of chemical change |
change in color, production of gas, and the formation of percipitate |
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Formation of percipitate is a... |
a chemical change |
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What is an example of a poor conductor of heat |
wood |
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Difference between an element and a compound |
an element cannot be broken down into simpler substances but a compound is able to become simpler substances |
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Copper can be drawin into a thin wire is it a physical or chemical changes |
physical |
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When oil and vinegar mix they slowly separate into layers this is an example of |
a suspension` |
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Is water a compound or a colloid |
a compound |
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What are examples of colloids |
fog or milk |
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How can you use distillation to separate compounds |
boil the substance |
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What is density used for? |
to test the purity of a substance |
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What is the melting point of water |
0 degrees celsius |
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what is the boiling point of water |
100 degrees celsius |
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What is an example of a substance with high malleability |
Gold or any other metals |
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What element has the highest hardness |
Diamond |
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HOw can you use physical properties |
used to identify materials to choose a specific material or to separate substances in a mixture |
