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20 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Matter
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Anything that occupies space
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Chemistry
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The scientific study of matter and the physical and chemical changes of matter.
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Solids
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Matter with definite weight, volume and shape
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Liquids
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Matter with definite weight and volume but no definite shape.
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Gases
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Matter with definite weight but indefinite volume and shape.
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Physical change
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A change in the physical characteristics of a substance without creating a new substance
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Chemical change
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A change in a substance that creates a new substance with chemical characteristics different from those of the original substance
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Organic chemistry
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Deals with all matter that is now living or was alive at one time, with carbon present
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Plants and animals
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Inorganic chemistry
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Studies all matter that is not alive, has never been alive and does not contain carbon.
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Water and rocks
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Elements
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Basic substances that cannot be broken down into simpler substances
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Atom
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Smallest complete unit of an element
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Molecule
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Two or more atoms joined together by a chemical bond
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Chemical bond
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Bond involving the sharing of electrons of two or more atoms
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Compound
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Molecule formed when two or more different atoms are joined chemically
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Amino acids
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Compounds consisting of carbon, oxygen, hydrogen and nitrogen joining together to create protein
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Keratin
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The primary protein hair is made of 97%
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Peptide bonds
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The backbone of protein molecule. Formed when two amino acids join together. Broken by alkaline chemicals and heat
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Hydrogen bond
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Opposites attract. When one hydrogen atom is attracted to another negative atom. Very weak and broken by heat and water. Organize the protein chain in hair to give shape. 35% of the hairs strength.
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Salt bond
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The negative charge in one amino acid attracts a positive charge in another amino acid. Also organize protein chains. Not strong. Weakened by water.
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Disulfide bond
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Sulfer type bonds joining other Sulfer bonds. A chemical bond that forms between protein structures. Breaking creates lasting effects.
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