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Chemical and Physical Properties/Changes

Physical property A characteristic of matter that can be observed and measured without changing the identity or chemical makeup of the substance
Examples of physical properties Color, odor, size, hardness, luster, phase of matter, mass, density, boiling point, melting point, solubility, conductivity
color Physical property; can be observed by looking at it
odor Physical property; many substances have a noticeable odor
size Physical property; can be measured without altering the chemical makeup of the substance
hardness Physical property; the measure of how difficult or easy it is to scratch a substance
luster Physical property; describes how light is reflected off of the surface of an object (How shiny is it?)
mass Physical property; measures the amount of matter in an objec
weigh Physical property; measures the force of gravity on an object
density Physical property; how tightly packed the atoms in an object are; mass divided by volume
Boiling point Physical property; the point at which a substance changes from a liquid to a gas
Melting point Physical property; the point at which a substance changes from a solid to a liquid
solubility Physical property; the measure in which an object dissolves into another object
Electrical conductivity Physical property; the measure of a material’s ability to allow the transport of an electrical charge
Chemical property A trait or behavior of a substance that gives it the ability or inability to undergo a chemical change; can only be observed when the substance is going through a chemical change or reaction
Examples of chemical properties reactivity, combustibility (flammability), and toxicity
reactivity Chemical property; how easily an atom has a chemical reaction with another element
Combustibility and flammability Chemical property; the ability a substance has to burn
combustion Chemical property; a chemical reaction that produces heat and light
toxicity Chemical property; the ability and strength of a substance to cause poisonous effects to living things
Physical change Change that happens without changing the chemical composition of a substance; no new substance is formed; usually (but not always) reversible
Chemical change Occurs when a substance undergoes a change that creates a new substance with different chemical and physical properties than the original substance; change is not
Created by: Reboi86
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