Flashcards - NES General Science: Organization of Matter

Flashcards - NES General Science: Organization of Matter
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An atom is the smallest constituent unit of ordinary matter that has the properties of a chemical element
In mathematics, an element, or member, of a set is any one of the distinct objects that make up that set
A chemical compound is an entity consisting of two or more atoms, at least two from different elements, which associate via chemical bonds
In chemistry, a mixture is a material system made up of two or more different substances which are mixed but are not combined chemically
A molecule is an electrically neutral group of two or more atoms held together by chemical bonds
The neutron is a subatomic particle, symbol n or n0, with no net electric charge and a mass slightly larger than that of a proton
A proton is a subatomic particle, symbol p or p+, with a positive electric charge of +1e elementary charge and mass slightly less than that of a neutron
In cell biology, the nucleus is a membrane-enclosed organelle found in eukaryotic cells
Solid is one of the four fundamental states of matter
atomic nucleus
The nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based on the 1909 Geiger–Marsden gold foil experiment
A covalent bond, also called a molecular bond, is a chemical bond that involves the sharing of electron pairs between atoms

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