Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
physical & chemical
Chemical and Physical changes and properties
| Term | Definition |
|---|---|
| physical property | 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 | Many substances have a noticeable odor. |
| 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 | The amount of matter that is in an object |
| weight | weight is mass x gravity |
| density | how tightly packed the atoms in an object are. |
| boiling point | the point at which a substance changes from a liquid to a gas. |
| melting point | the point at which a substance changes from a solid to a liquid. |
| solubility | the measure in which an object dissolves into another object. |
| electrical conductivity | the measure of a material’s ability to allow the transport of an electric charge. |
| chemical property | a trait or behavior of a substance that gives it the ability or inability to undergo a chemical change |
| combustibility and flammability | the ability a substance has to burn. |
| combustion | a chemical reaction that produces heat and light. |
| toxicity | the ability or strength of a substance to cause poisonous effects to living things. |
| physical change | a change that happens without changing the chemical composition of a substance. |
| chemical 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. |
| reactivity | how easy 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, metal, nonmetal, metaloid, mass, density, phase, color, specific gravity, ductile, magnetism, conductivity, ability to dissolve, solubility, luster, hardness, size, boiling point, odor, luminescence, melting point, |
| examples of chemical properties | oxidation, flammability, toxicity, combustibility, reactivity, radioactivity. |
| examples of physical changes | examples of dissolving, cutting, changing phases. |
| examples of chemical changes | formation of a compound, examples of reacting, examples of oxidation, examples of toxicity. |
Created by:
Bryson Harris
Popular Physical Science sets