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Science

Chapter 1 Vocabulary

TermDefinition
Homogenous Mixture (is) a mixture in which substances are evenly distributed throughout the mixture.
Substance (is) a single kind of matter that is pure, meaning it always has a specific makeup- or composition - and a specific set of properties.
Mixture (is) 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 (is) a characteristic of a pure substance that describes its ability to change into different substances.
Chemical Bond (is) a form of attraction between two atoms.
Heterogenous Mixture (is) 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 (is) The basic particle from which all elements are made.
Element (is) a pure substance that can not be broken down into any other substances by chemical and physical means.
Chemistry (is) the study of the properties of matter and how matter changes.
Solution (is) an example of a homogeneous Mixture; forms when substances dissolve.
Matter (is) anything that has mass or takes up space.
Physical Property (is) a characteristic of a pure substance that can be observed without changing it into another substance.
Compound (is) a pure substance made of two or more elements chemically combined in a set ratio.
Volume (is) 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 (is) the measurement of the amount of matter in the object.
Density relates the mass of a material in a given volume.
Weight (is) a measure of the force of gravity on you.
Endothermic Change (is) a change in energy in which energy is taken in.
Physical Change (is) any change that alters the form or appearance of matter but does not make any substance in the matter into a different substances.
Chemical Change (is) a change in matter that produces one or more new substances.
Law of Conservation of Mass (is) the fact that matter is NOT created or destroyed in any chemical or physical change.
Energy (is) the ability to do work or cause change.
Temperature (is) a measure of the average energy of random motion of particles of matter.
Thermal Energy (is) the total energy of all particles of matter.
Exothermic Change (is) a change in which energy is given off.
Kinetic Energy (is) the energy of matter in motion.
Potential Energy (is) the energy an object has because of its position.
Chemical Energy (is) the international energy stored in the chemical bonds between atoms.
Electromagnetic Energy (is) a form of energy that travels through space as waves.
Electrical Energy (is) the energy of electrically charged particles movings from one place to another.
Electrodes - two metal strips placed in a solution.
Created by: KRcolbert