vocab from CI#1 and CI#2
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Alkali Metals | located in group I
physical properties
soft, silvery, most reactive, only found combined with other elements
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| Alkaline Earth Metals | located in group II
physical properties
hard, bright white, good conductors
chemical properties
very reactive, only found combined with other elements
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| Chemical Reaction | a process in which the starting substance (reactants) change into new substances (products)
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| Chemistry | the branch of science that deals with matter, the properties of matter, the properties of matter, and the way in which matter interacts
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| Chemical Properties | a characteristic of a substance that determines how it interacts with other substances
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| Chemical Change | a change in matter that produces a new substance
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| Chemically: Reactive or "Reactive" | combines with other substances to form new substances
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| Element | a substance that cannot be broken into simpler substances by chemical or physical processes
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| Forms Compounds | two or more elements join together to form a new substance
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| Group/Family | vertical column on the Periodic Table of elements
18 groups, elements in the same group share properties
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| Halogen Groups | located in the group XVII
chemical properties
very reactive, dangerous to humans
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| Mixture | two or more substances mixed together
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| Metals | elements that display metallic properties
physical properties
hard, shiny, malleable (bendable), ductile, high melting points, solid at room temperature
chemical properties
wide range of reactivity
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| Metalloids | elements that have some characteristics of both metals and nonmetals
physical properties
conducts electricity under certain conditions
chemical properties
often combines with oxygen
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| Nonmetals | elements that do not display metallic properties
physical properties
dull, brittle, low boiling points, lower densities
chemical properties
readily form compounds, gain or share electrons
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| Noble Gases | located in group XVIII
chemical properties
stable, nonreactive, usually don't form compounds
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| Products | a substance produced in a chemical reaction
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| Property | a characteristic of a substance
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| Physical Property | a characteristic of a substance that can be observed without chemically changing the substance
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| Physical Change | a change in the appearance of a substance, but a new substance is not created
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| Precipitate | the solid that is left after a liquid evaporates
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| Periodic Table | a way to organize the elements based on atomic number of elements: and chemical property (from the simplest element to the most complex)
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| Reactants | a starting substance(s) in a chemical reaction
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| Substance | a type of matter defined by a unique (one of a kind) particle
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| State or Phase of Matter | the form in which matter exists can be: solid, liquid, gas
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| Transition Metals | located in group III-XII
physical properties
hard, shiny, good conductors
chemical properties
fairly stable, reacts slowly or not at all with air/water
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