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Definition
| a group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction |
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Term
| Steps of the scientific method |
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Definition
1. observe
2. prepare a hypothesis
3. being skeptical
4. predicting an outcome that should result if the hypothesis is true
5. test the prediction/experiment
6. revising or changing the hypothesis
7. testing the revised or new hypothesis
8. upgrading the hypothesis to a theory via more experiments |
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Term
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Definition
| when a hypothesis is tested and confirmed by many experiments under varying conditions without contradiction |
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Definition
| summary of a pattern of regularity detected in nature |
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Definition
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Definition
| can be viewed with the naked eye |
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Definition
| can only be viewed under a microscope |
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Term
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Definition
| all matter consists of extremely tiny particles that are in constant motion |
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Term
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Definition
| when the molecules of a substance are arranged in an orderly pattern |
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Definition
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Definition
| when the chemical identity of a substance is destroyed and a new substance forms |
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Definition
| all the chemical changes possible for a substance |
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Definition
| a single chemical, one kind of matter, entirely made up of one type of molecule |
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Definition
| a substance that consists of 2 or more pure substances mixed together |
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Definition
| has a uniform appearance and once properly stirred has a uniform composition |
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Definition
| a mixture that separates into distinct phases that are usually visible to the naked eye |
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Definition
| something who's chemical properties include that it can not be decomposed or separated into other stable pure substances |
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Definition
| any pure substance that can be decomposed by a chemical change into two or more other pure substances |
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Term
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Definition
| formulas of the original substance written to the left of the arrow in a chemical equation |
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Definition
| formulas of the new substances formed in a chemical equation to the right of the arrow |
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Definition
| compact written form of a chemical change |
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Definition
| the ability to do work or transfer heat |
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Definition
| a chemical change that transfers energy to its surroundings |
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Definition
| the energy due to the motion of an object |
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Definition
| a chemical change that removes energy from the surroundings |
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Definition
| energy in stored form; the energy due to the arrangement of the charged particles in a system |
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Term
| Law of Conservation of Mass and Energy |
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Definition
| a pattern in nature that the total quantity of mass and energy in the universe is fixed and does not change |
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Term
| Law of Conservation of Mass |
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Definition
| the total mass of the reactants in a chemical change is equal to the total mass of the products |
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Term
| Law of Conservation of Energy |
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Definition
| energy lost or used in one form is always exactly equal to the energy gained in another form |
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Term
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Definition
| an atom or molecule with a net electric charge due to the loss or gain of one or more electrons. |
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Term
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Definition
| a negatively charged ion, i.e., one that would be attracted to the anode in electrolysis. |
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Term
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Definition
| a number assigned to an element in chemical combination that represents the number of electrons lost (or gained, if the number is negative) by an atom of that element in the compound. |
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Definition
| a positively charged ion, i.e., one that would be attracted to the cathode in electrolysis. |
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Definition
| a substance composed of exactly two different elements, which are substances that cannot be simplified further by chemical means |
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Definition
| a compound containing three different elements |
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Term
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Definition
| an anion containing one or more oxygen atoms bonded to another element |
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