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Science unit 2 lesson 2 - properties of matter

Terms in this set (25)

a characteristic of a substance that can be observed and measured without changing the identity of the substance.
physical property
what can be used to detect physical properties?
all of your senses
what are some physical properties?
color, shape, size and texture
the material of a physical property [does or does not] keep its identity?
it DOES
boiling water even though some water turns to gas is this a change in identity?
NO - it is still "water" whether it is solid, liquid or gas
List the 9 common physical properties
density
electrical conductivity
thermal conductivity
solubility
malleability
luster
magnetic attraction
melting point
boiling point
measure the amount of mass in a given volume
D = M/V
density
measure of how well an electric current can move thru a substance
electical conductivity
the rate at which a substance transfers heat
thermal conductivity
the ability of a subtance to dissolve in another substance (like coolaid in water)
solubility
the ability of a substance to be rolled or pounded into various shapes
malleability
shine
luster
the temperature at which a substance changes from solid to liquid
melting point
point at which a substance boils
boiling point
a substance's ability to change into a new substance with different properties
Chemical property
examples of common chemical properties
flammability
reactivity with substances such as oxygen, water and acids
what is a chemical property for the metal iron?
rust
what is a chemical property of silver?
tarnishing
when wood burns, new substances such as water, carbon dioxide and ash are formed.
what is the chemical reaction of flammability of wood?
the ability of a substance to interact with another substance and form one or more new substances.
what is reactivity?
True
A substance always has physical and chemical properties T/F?
Give an example of something that has physical and chemical properties.
A Nail - can be bent (physical) and can rust (chemical)
A log - has mass (physical) can be burned (chemical)
the collection and study of physical (and chemical) evidence in a criminal investigation.
What is forensic science?
properties unique to a substance
What are characteristic properties?
through its characteristic properties. Gold for example vs. iron pyrite. Gold flattens when hit, iron pyrite shatters. gold keeps its shine, while iron pyrite turns green if exposed to water. Also by their density. Gold is more dense.
how can physical and chemical properties identify a substance?
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