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15 Cards in this Set
- Front
- Back
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What is Matter?
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Anything that occupies space and has mass.
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Molecules
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Particles of matter that are composed of one or more smaller units called Atoms.
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Nucleus
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composed of positively charged protons and uncharged neutrons.
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Proton
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Positively charged particle within the nucleus of an atom.
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Neutron
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Electrically neutral particle within the nucleus of an atom.
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Electron
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Small negatively charged sub atomic particle found in the outer regions of an atom.
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What 4 kinds of atoms make up about 96% of the human body?
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Oxygen, Carbon, Hydrogen, Nitrogen.
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What is a covalent bond?
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Chemical bond formed by two atoms sharing one or more pairs of electrons.
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What is an Ionic Bond?
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Chemical bond formed by the positive-negative attraction between two ions.
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Two forms of nucleic acid?
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Deoxyribonucleic Acid {DNA} & Ribonucleic Acid {RNA}
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Name and define 3 kinds of particles within an atom?
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subatomic particles..protons, neutrons and electrons.
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What is an energy level?
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Limited region surrounding the nucleus of an atom at a certain distance containing electrons {SHELL}
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What is an electrolyte?
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Substance that dissociates into ions in solution, rendering the solution capable of conducting an electric current.
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Define organic compound and inorganic compound.
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Organic- Compound whose large molecules contain carbon and that include C-C bonds and/or C-H Bonds
Inorganic- Compound whose molecules do not contain C-C or C-H bonds. |
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Explain the concept of pH.
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pH value higher than 7= Basic
Less than 7= Acidic Equal to 7 is neutral |
