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cemical and physical
ccemical and 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. |
| physical property examples | Some examples of physical properties are color, odor, size, hardness, luster, phase of matter, mass, density, boiling point, melting point, solubility, and conductivity. |
| color | We can easily observe the color of a substance by looking at it. |
| odor | Odor - Many substances have a noticeable odor. |
| size | Size - The size of a substance can be measured without altering the chemical makeup of the substance. |
| hardness | Hardness - Hardness is the measure of how difficult or easy it is to scratch a substance. |
| luster | Luster - Luster describes how light is reflected off the surface of an object. (How shiny is the object?) |
| mass | mass it the amonut of matter (same everwhere) |
| weigth | Weigth is the effect of gravity on the mass of an object (change deping on grv) |
| density | is how tightly packed the atoms in an object are. |
| boiling point | The boiling point is the point at which a substance changes from a liquid to a gas . |
| melting point | The melting point is the point at which a substance changes from a solid to a liquid. |
| solubility | Solubility is the measure in which an is one a object deos into another object |
| electrical conductivity | Electrical conductivity is the measure of a 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 and flammability | Combustibility and flammability both mean the ability a substance has to burn. |
| combustion | Combustion is a chemical reaction that produces heat and light. |
| Toxicity | Toxicity is the ability or strength of a substance to cause poisonous effects to living things. |
| physical change | A physical change is a change that happens without changing the chemical composition of a substance. No new substance is formed. The change is usually (but not always) reversible. |
| physical change examples | The form, size, shape, or color of an object can be changed without affecting what makes up the substance. |
| Chemicla change | A chemical change occurs when a substance undergoes a change that creates a new substance with different chemical and physical properties than the original substance. The change is not reversible. |
| 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. |
| Chemical property examples | Some examples of chemical properties oxidation ,flammability toxicity, combustibicity, reactiviy and radioactivily |
| Chemical change examples | Some examples of chemical change formation of compund, examples of reacting, examples of oxidation, and examples of toxicity |
Created by:
Romansutru
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