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science Interactions Ch 4
chapter 4 vocabulary
31
Science
6th Grade
05/07/2008

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Term
Solid
Definition
a material that has a definite shape and volume
Term
Liquid
Definition
a material that has a definite volume but no definite shape of its own
Term
Gas
Definition
a material that has neither a definite volume nor a definite shape.  It will expand to fill the container it is in.
Term
Physical Property
Definition
any characteristic of a material that can be observed or measured.
Term
Length
Definition
the distance from one point to another.
Term
Volume
Definition
how much space an object takes up.
Term
Mass
Definition
the amount of matter in an object.
Term
Density
Definition
the amount of material an object is made of compared to its volume.  In other words, how tightly packed the matter is.
Term
Chemical change
Definition
a change that results in a new substance being formed
Term
Physical Change
Definition
a change in a physical property, but the material is still the same
Term
Chemical Property
Definition
a characteristic that tells how a material will react with another substance
Term
units of measure for mass
Definition
grams
Term
units of measure for volume
Definition
milliliters for a liquid
cubic centimeters for a solid
Term
units of measure for density
Definition
grams per cubic centimeter
Term
substance
Definition
someting that is made of only one material
Term
What are the two types of mixtures?
Definition
heterogeneous & homogeneous
Term
mixture
Definition
a material made of more than one substance but each keeps its own properties.
Term
heterogeneous mixture
Definition
the particles are NOT evenly distributed. You can see bits of each ingredient
Term
homogeneous mixture
Definition
the materials are distributed evenly. You can not see individual particles.
Term
element
Definition
the most basic ingredients of substances. They are listed on the Periodic Table of Elements
Term
compound
Definition
a material made of several elements that have been combined chemically. The can not be separated.
Term
solid changes to liquid
Definition
melting
Term
liquid changes to gas
Definition
evaporation
Term
gas changes to liquid
Definition
condensing
Term
liquid changes to solid
Definition
freezing
Term
melting point
Definition
the exact temperature when that solid material changes to a liquid
Term
boiling point
Definition
the exact temperature when that liquid material changes to a gas
Term
Give at least two examples of chemical properties
Definition
flammability, light sensitivity
Term
Give at least two example of chemical changes
Definition
burning, rusting
Term
Give at least two examples of physical properties
Definition
state of matter, color, mass, length, texture
Term
Give at least two examples of physical changes
Definition
evaporating, breaking, freezing, change in color
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