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Chap 1 Intro2Matter

Matter is anything that has mass and takes up space.
Chemistry is the study of the properties of matter and how matter changes.
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.
Physical Property is a characteristic of a pure substance that can be observed without changing it into another substance.
Chemical Property is a characteristic of a pure substance that describes its ability to change into different substances.
Element is a pure substance that cannot be broken down into any other substances by chemical or physical means.
Atom is the basic particle from which all elements are made.
Chemical Bond is a force of attraction between two atoms.
Molecules atoms combine to form larger particles
Compound is a pure substance made of two or more elements chemically combined in a set ratio.
Chemical Formula shows the elements in the compound and the ratio of atoms.
Mixture is made of two or more substances—elements, compounds, or both—that are together in the same place but are not chemically combined.
Homogenous Mixture so evenly mixed that you can’t see the different parts
Heterogenous Mixture you can see the different parts
Solution is an example of a homogeneous mixture.
Weight is a measure of the force of gravity on you
Mass of an object is the measurement of the amount of matter in the object.
International System of Units To measure the properties of matter, scientists use a system called
Volume The amount of space that matter occupies
Density relates the mass of a material in a given volume.
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 substance.
Chemical Change change in matter that produces one or more new substances
Law of Conservation of Mass 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.
Tempurature is a measure of the average energy of random motion of particles of matter.
Thermal Energy is the total energy of all of the particles in an object.
Endothermic Change a change in which energy is taken in.
Exothermic Change releases energy
Kinetic Energy the energy of matter in motion
Potential Energy is the energy an object has because of its position
Chemical Energy The internal energy stored in the chemical bonds between atoms is a form of potential energy
Electromagnetic Energy a form of energy that travels through space as waves
Electrical Energy is the energy of electrically charged particles moving from one place to another
Electrodes In electrolysis two metal strips called_________ are placed in a solution but do not touch.
Created by: AlyMcG1027