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Ch. 15 & 16~HKH
| Question | Answer |
|---|---|
| the combining of atoms to form molecules or compounds | Chemical Bonds |
| a compound made up of positively charged ions | Ionic Compounds |
| a chemical compound formed by sharing of electrons | Covalent Compound |
| any compound that increases the number of hydronium ions when dissolved in water | Acid |
| a compound that can reversibly change color depending on conditions such as pH | Indicator |
| any compound that increases the number of hydroxide ions when dissolved in water | Base |
| the reaction of an acid and a base to form a neautral solution of water and salt | Neutralization Reaction |
| a value that is used to express the acidty or basicity of a system | pH |
| an ionic compound that forms when a metal atom replaces the hydrogen of an atom | Salt |
| a covalently bonded compound that contains carbon | Organic Compound |
| an organic compound composed only of carbon and hydrogen | Hydrocarbon |
| a class of energy-giving nutrients that includes sugars, starches, fiber;composed of one or more simple sugars bonded together | Carbohydrate |
| a type of biochemical that does not dissolve in water;fats and steroids are lipids | Lipid |
| a molecule that is made up of amino acids and that is needed to build land repair body structures and to regulate processes in the body | Protein |
| a molecule made up of subunits called nucleotides | Nucleic Acid |
| the process by which an unstable nucleus gives off nuclear radiation | Radioactivity |
| the sum of the numbers of protons and neutrons in the nucleus of an atom | Mass Number |
| an atom that has the same number or protons as other atoms of the same element do but that has a different number of neutrons | Isotope |
| the time needed for half of a sample of a radioactive substance to undergo radioactive decay | Half-Life |