Ch. 1 & 9 Vocab Flashcards
(27 cards)
A change in which one or more substances are converted into different substances
Chemical change
The smallest unit of an element that maintains the chemical identity of that element
Atom
Relates to a substances ability to undergo changes that transform it into different substances
Chemical property
A substance that can be broken down into simple’s stable substances. Each compound is made from Adams of two or more elements that are chemically bonded
Compound
A pure substance that cannot be broken down into simpler, stable substances it is made of one type of atom
Element
Depends on the amount of matter that is present
Extensive property
The vertical columns of the periodic table
Family/ Group
Has neither definite volume nor definite shape
Gas
Do not depend on the amount of matter present
Intensive property
Has a definite volume but an indefinite shape
Liquid
Anything that has mass and takes up space
Matter
An element that is a good electrical conductor and a good heat conductor
Metal
An element that has some characteristics of metals and some characteristics of nonmetals
Metalloid
A blend of two or more kinds of matter, each of which retains its own identity and properties
Mixture
An element that is a poor conductor of heat and electricity
Nonmetal
The horizontal rows of elements in the periodic table
Periods
A change in the substance that does not involve a change in the identity of the substance
Physical change
A characteristic that can be observed or measured without changing the identity of the substance
Physical property
Has definite volume in definite shape
Solid
Deals with the mass relationships of elements in compounds
Composition stoichiometry
Involves the mass relationships between reactants and products in a chemical reaction
Reaction stoichiometry
A conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction
Mole ratio
The reactant that limits the amount of the other reacted that can combine in the amount of product that can formed in a chemical reaction
Limiting reactant
The substance that is not used up completely in a reaction
Excess reactant
