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matter anything that occupies space and that we can see, smell, taste, hear or touch.
atom the basic component of matter
molecule when two or more atoms are connected together
mass the amount of matter in an object
properties the unique characteristics of matter
chemist a scientist who studies the properties of matter
measurement system when a group of people agree to measure things using a collection of specific standards
metric system the measurement system that uses the meter as the stand of length
conservation of matter means that matter can change form, but it cannot be created or destroyed
cycle of matter the process in which matter changes and goes back to its original form
state of matter the physical property that defines how molecules are arranged
solid matter whose molecules are packed close together and can barely move
liquid matter whose molecules move fast enough to have some freedom
gas matter whose molecules fly away from one another in random directions
sublimation when solid becomes a gas
deposition when gas becomes a solid
pure substance when matter contains only one kind of substance
mixture any combination of substances that can be separated
solution a mixture that acts like a pure substance
chemical reaction when atoms in molecules are rearranged to make new molecules
substance matter with atoms that makes it different from other kinds of matter
What do chemists study? what objects are made of, how material changes, and how matter interacts with other kinds of matter
Why is it important to use a standard measurement system? to get the right measurement
What does the law of the conservation of matter mean? God created certain laws that define how matter is to behave.
What is an example of a cycle of matter? water cycle
A state of matter is the physical property that defines how _________ are arranged in the matter. molecules
What have a definite shape and a definite volume? solids
What type of matter has molecules that are packed close together and can barely move? solids
A ______ is matter whose molecules move fast enough to have some freedom but cannot be confined to a certain position. liquid
Liquids have a definite _______. volume
Liquids ______ changes to fit the container they are in. shape
What is the matter whose molecules move so fast that they fly away from one another? gas
What has no definite shape or volume? gases
A solid becomes a liquid. melting
A liquid becomes a solid. freezing
A liquid becomes a gas. evaporation
A gas becomes a liquid. condensation
A solid becomes a gas. sublimation
A gas becomes a solid. deposition
What are two examples of chemical reactions? campfire and food
Everything is made of _______. matter
Created by: jennparker