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Chemical & Physical
| Question | Answer |
|---|---|
| physical property | A physical property is a characteristic of matter that can be observed and measured without changing the identity or chemical makeup of the substance. |
| Color | We can easily observe the color of a substance by looking at it. |
| Odor | Many substances have a noticeable odor |
| Size | The size of a substance can be measured without altering the chemical makeup of the substance. |
| Hardness | Hardness is the measure of how difficult or easy it is to scratch a substance |
| Luster | Luster describes how light is reflected off the surface of an object. (How shiny is the object?) |
| Mass | Mass is the amount of matter in an object; the same everywhere;(stays the same) |
| Weight | Weight=Mass x Gravity; (weight increases when mass or gravity increases); changes depending on gravity or what planet your on |
| Density | Density is how tightly packed the atoms in an object are. |
| The boiling point is the point at which a substance changes from a ___________________ to a ______________. | Liquid to a Gas |
| The melting point is the point at which a substance changes from a _________________ to a ____________________. | Solid to a Liquid |
| Solubility is the measure in which an ______________ ________________________________________________. | an object dissolves into another object; it can involve solids, liquids, and gases. |
| Electrical conductivity is the measure __________________________________________________ | of material's ability to allow the transport of an electric charge. |
| chemical property | A chemical property is a trait or behavior of a substance that gives it the ability or inability to undergo a chemical change. |
| Combustibility (Flammability) | Combustibility and flammability both mean the ability a substance has to burn. |
| Combustion is a ___________________ reaction that produces ________________ and _________________. | chemical; heat and light |
| Toxicity is the ability or __________________ of a substance to cause ______________________ effects to ______________________ things. | strength; poisonous; living |
| Reactivity | How easily an atom has a chemical reaction with another element. |
| What causes the odor when milk sours? | When milk begins to ferment (break down), it smells bad because of the bacteria that is being formed. Chemicals with a sour odor are released by this bacteria. |
| What causes the bubbles in a chemical reaction? | Some chemical reactions occur and cause a gas to form. The bubbles are the evidence of the gas fumes escaping. |
| What is a precipitate? | It is an insoluble (can’t dissolve) solid that is formed when two liquids combine. |
| Examples of Physical Properties | Malleable; Mass; Metal, Nonmetal, Metalloids; Density; Phase; Color; Ductile; Magnetism; Conductivity; Solubility; size; Luminescence; boiling point; melting point; odor; hardness; luster; ability to dissolve; specific gravity; |
| Examples of Physical Changes | example of dissolving; cutting; changing phases |
| Examples of Chemical Properties | oxidation; flammability; combustibility; toxicity; reactivity; radioactivity; |
| Examples of Chemical Change | formation of compound; example of reacting; example of oxidation; example of toxicity |
Created by:
kayleek.
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