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Science

TermDefinition
Homogeneous Mixture a mixture in which substances are evenly distributed throughout the mixture
Substance a single kind of matter that is pure, meaning it always has a specific makeup- or composition- and a specific set of properties
Mixture Made of two or more substances- elements, compounds, or both- that are together in the same place but not chemically combined
molecules groups of two or more atoms held together by chemical bonds
Chemical Property a characteristic of a pure substance that describes its ability to change into different substances
Chemical bond A force of attraction between two atoms
Heterogeneous Mixture a mixture in which pure substances are unevenly distributed throughout the mixture
Chemical Formula Shows the elements in the compound and the ratio of atoms
Atom the basic particle from which all elements are made
Element a pure substance that cannot be broken down into any other substances by chemical and physical means
Chemistry the study of the properties of matter and how matter changes
Solution an example of a homogeneous mixture; forms when substances dissolve
Matter anything that has mass or takes up space
Physical Property a characteristic of a pure substance that can be observed without changing into another substance
Compound a pure substance made of two or more elements chemically combined in a set ratio
Volume the amount of space that matter occupies
International System of Units (ISU) the system of units (SI) used by scientists to measure the properties of matter
Mass the measurement of the amount of matter in an object
Density Relates the mass of a material in a given volume
Weight a measurement of the force of gravity on you
Endothermic Change a change in energy in which energy is taken in
Physical Change any change that alters the form or appearance of matter but does not make any substance in the matter into a different substance
Chemical change a change in matter that produces one or more new substances
Law of Conservation of Matter the fact that matter is not created or destroyed in any chemical or physical change
Energy the ability to do work or cause change
Temperature a measure of the average energy of random motion of particles of matter
Thermal Energy the total energy of all the particles of matter
Exothermic change a change in which energy is given off
Kinetic energy the energy of matter in motion
Potential Energy the energy an object has because of its position
Chemical Energy the internal energy stored in the chemical bonds between atoms
Electromagnetic Energy A form of energy that travels in waves
Electrical Energy the energy of electrically charged particles moving from one place to another
Electrodes two metal strips placed in a solution
Created by: Mwestmoreland