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cemical and physical

ccemical and physical

QuestionAnswer
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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