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Matter

Properties of Matter

QuestionAnswer
Pure substance Matter, either an element or compound, that has definite physical and chemical properties
Element Substances composed of a single kind of atom.
Compound Substances made up of atoms of two or more different elements chemically joined together.
Mixture A combination of two or more substances that are not chemically combined.
Homogeneous mixture Mixtures that have the same substance throughout.
Heterogeneous mixture Mixtures that have different substances throughout.
Density The mass of a substance per unit volume. Stays the same for substances even when halved or doubled. D = M/V
Examples of physical properties Mass, volume, density, color, malleability, conductivity.
Examples of chemical properties Reactivity, flammability, explosive.
Molecule More than one atom bonded together.
Matter Anything that takes up space and has mass
Properties of water molecules. They are always in motion and are attracted to each other.
Chemical properties Flammability, reactivity, explosiveness
Physical properties Color, mass, volume, density
Atom Smallest unit of matter
Solid State of matter with a definite volume and definite shape. Molecules vibrate in place.
Liquid State of matter with a definite volume but not a definite shape. Molecules move past each other.
Gas State of matter without a definite volume or definite shape. Molecules are far apart.
Temperature The average kinetic energy of a substance.
What happens in evaporation? A substance changes from a liquid to a gas.
What happens in condensation? A substance changes from a gas to a liquid.
Created by: cook2sm
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