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