Chapter 2 Project By: Christy Dunnam

Matter-physical substance in general, as distinct from mind and spirit, also matter is composed of what atoms and molecules are made of, meaning anything made of positively charged protons, neutral neutrons, and negatively charged electrons.

Substances-a particular kind of matter with uniform properties

Mixtures-a substance made by mixing other substances together

The difference in a substance and a mixture is that a substance is pure it cant be broken down using physical processes, but a mixture is a combination of substances and can be separated using physical processes.

Element-a part or aspect of something abstract, especially one that is essential or characteristic

Compound-a thing that is composed of two or more separate elements

The difference in a element and compound is that an element is a substance made of the same type of atoms, but a compound is made of different elements in define proportions.

Atom- the basic unit of a chemical element

Heterogeneous mixture-visibly different substances

Homogeneous mixture-referred to as solutions, appear to be one pure substance

Law of constant composition-the ratio by mass of the elements in the compound is always the same, regardless of the source of the compound

molecule-is the smallest particle of a compound

The difference in the physical and chemical properties of matter is that a physical property is an aspect of matter that can be observed of measured without changing it, physical change, but a chemical property may only be observed by changing the chemical identity of a substance, this property also measures the potential for undergoing a chemical change.

Examples of physical properties-color, molecular weight, and volume

Examples of chemical properties-reactivity, flammability, and oxidation states

Chemical change-irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition

Chemical property-can only be observed without changing the identity of the substance

Physical change-are changes that do not alter the identity of a substance

Physical property-are properties that can be observed without changing the identity of the substance

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