Set: Science Midterm

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All 53 Terms

Term Definition
occurs when an element or chemical group breaks the bond of another chemical group or element making a new product or products displacement
occurs when there is a rapid exothermic combination of substances with oxygen combustion
occurs when chemical bonds of a chemical are broken due to heat or light. large compounds will break apart into smaller compouds or elements. decomposition
where energy is absorbed. the product's temperature is colder than the reactant's. endothermic
occurs when the chemical reaction releases heat. products become warmer than the reactant's. exothermic
a chemical that changes the rate of a reaction by making it go faster. the catlyst does not take part in the reaction and is still present when the reaction is complete. a catalyst works by providing a conveinient surface on which the reactants collude more frequently. catalysts
increase the temperature of the reactants, increase the surface area of the reactants/make a solid into a fine powder, increase the concentration of the reactants, adding a catalyst. factors that enhance a chemical reaction
new chemicals are produced, the color changed events that occur when a chemical reaction takes place
hydrogen ion donors, tastes sour, turns litmus paper red, pH values 1-7, the lower the pH value the stronger the acid acids
hydroxylion (OH) or carbonate (CO3) donors, tastes bitter, feels slippery base
matter that has a definite shape and volume solid
matter that has a definite volume but no definite shape liquid
matter that has no definite shape or volume gas
matter at high energy, most common state of matter in the universe plasma
when a substance doesn't change the chemical structure or composition physical change
a physical process to determine what type of substances have been mixed together by separating them from one another chromatography
the rate (speed) at which a solute dissolves in the presence of a solvent. the higher the solubility, the highter the point on a piece of chromatography paper solubility
a substance that can be physically seperated mixture
phase change, gas to liquid condensation
phase change, liquid to gas vaporization
phase change, solid to gas sublimation
phase change, gas to solid deposition
something that stays elevated suspension
something that dissolves solute
something that dissolves something else solvent
mixture of solute and solvent solution
weak solution diluted
strong solution concentrated
conducted to identify the metal cations in a solution flame testing
center of the atom, contains protons and neutrons nucleas
subatomic particle orbiting around the nucleas, negative charge electron
two or more different elements that have been chemically bonded together. compound
pure substance of simplest form element
2 or more substances mixed but can easily be seperated mixture
how many electrons an element will take or give up oxidation state
meants the element will take electrons from another element negative valence
element gives up electrons positive valence
formed in outermost electron shell of atom chemical bonds
when two atoms share their outermost electrons covalent
when atoms share their outermost electrons and the two atoms are metals metallic covalent
when one atom transfers its outermost electrons to another atom, opposite charges ionic
elements that will not bond with other elements noble or inert gases
mixture of metals with is prepared in molten (liquid) state alloy
charged particle when an atom gains or looses more electrons ions
positively charged particle cation
negatively charged particle anion
colorless and odorless fas that doesn't aid in combustion, flame will go out carbon dioxide
colorless, odorless gas that will make a flame burn brighter and faster oxygen
colorless gas that will burn when oxygen is present acetylene
a colorless gas that will explode in presence of a fire or spark hydrogen
a gas that is produced during a chemical reaction effervescence
an insoluble solid that forms when solutions are mixed together precipitant
two or more simple substances combine to create a new, more complex substance synthesis
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Set Information

Terms 53
Creator beautiful_liar017
Created December 18, 2007
Groups None
Tags table, science, reactions, of, odden, mrs, equations, elements, chemical, burich, bases, addie, acids
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A study guide that has EVERYTHING to acing a chemistry midterm.

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beautiful_liar017 : Changed phase change, gas to solid → depostition to deposition → phase change, gas to solid
beautiful_liar017 : Changed matter that has no definite shape or volume → gases to gas → matter that has no definite shape or volume
beautiful_liar017 : Changed hydroxylion (OH) or carbonate (CO3) donors, tastes bitter, feels slippery → bases to base → hydroxylion (OH) or carbonate (CO3) donors, tastes bitter, feels slippery
beautiful_liar017 : Changed 2 or more substances mixed but can easily be seperated → micture to mixture → 2 or more substances mixed but can easily be seperated
beautiful_liar017 : Changed mixture → 2 or more substances mixed but can easily be seperated to 2 or more substances mixed but can easily be seperated → mixture
Last Message: 8 months ago

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Most Missed Words

  1. occurs when an element or chemical group breaks the bond of another chemical group or element making a new product or products → displacement - 2 misses
  2. when a substance doesn't change the chemical structure or composition → physical change - 2 misses
  3. phase change, solid to gas → sublimation - 2 misses
  4. how many electrons an element will take or give up → oxidation state - 2 misses
  5. meants the element will take electrons from another element → negative valence - 2 misses
  6. element gives up electrons → positive valence - 2 misses
  7. when two atoms share their outermost electrons → covalent - 2 misses