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Atoms

submicroscopic particles, fundamental building blocks of ordinary matter

Molecules

two or more atoms attached together in a specific geometrical
arrangement, come in different shapes and patterns

Law

a concise statement of a relationship between phenomena that is always the same under the same conditions.

Theory

a unifying principle that explains a body of facts and/or those laws that are based on them

Matter

anything that occupies space and has mass

Composition

types of particles, arrangement of the particles, attractions and attachments between the particles

State

whether it's solid, liquid, or gas

Solid

Rigid shape, Maintains volume, not compressible, doesn't flow

Liquid

Assumes, containers shape, maintains volume, not compressible, flows

Gas

Assumes containers shape, maintains volume, compressible and flows

Pure Substance

Made up of only one component and its composition is invariant, All samples show the same intensive properties

Mixture

Made up of two or more components in proportions that can vary from one sample to another, samples may show different intensive properties

Element

Made of one type of atom (some
elements found as multi-atom molecules in nature), combine together to make
compounds

Compound

Made of one type of molecule, or an array of ions, Units contain two or more different kinds of atoms

Physical properties

the characteristics of matter that can be changed without changing its composition - odor, color, density, appearance, melting point, boiling point, etc.

Chemical properties

the characteristics that a substance displays only by changing its composition via contact with other matter or the influence of energy (a chemical change) - corrosiveness, flammability, acidity, toxicity, etc.

physical

The boiling of water is a _______ change

Chemical

The rusting of iron is a ________ change

extensive property

depends upon how much matter is being considered.

Intensive property

does not depend upon how much matter is being considered.

Energy

he capacity to do work

kinetic or potential

Energy is classified as either

Kinetic

is energy of motion

Potential

is energy that is stored in the matter

Law of Conservation of Energy

_______ states that whatever process you do that converts energy from one type or form to another, the total amount of energy remains the same

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