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41 Cards in this Set

  • Front
  • Back


Anything that has mass and occupies space


The property that defines the quantity of matter in an object


The capacity to do work


The study of the composition, structure, and properties of matter and of the energy consumed or given off when matter undergoes a change

(Pure) Substance

Matter that has a constant composition and cannot be broken down into simpler matter by any physical process

Physical Process

A transformation of a sample of matter, such as a change in its physical state, that does not alter the chemical identity of any substance in the sample


A combination of pure substances in variable proportions in which the individual substances retain their chemical identities and can be separated from one another by a physical process

Homogeneous Mixture

A mixture in which the components are distributed uniformly throughout and have no visible boundaries or regions


Another name for homogeneous mixture; often liquids but may be solids or gases

Heterogeneous Mixture

A mixture in which the components are not distributed uniformly, so that the mixture contains distinct regions of different compositions


A pure substance that cannot be separated into simpler substances by any chemical process


A pure substance that is composed of two or more elements bonded together in fixed proportions and that can be broken down into those elements by some chemical process

Chemical Reaction

The transformation of one or more substances into different substances

Law of Constant Composition

All samples of a particular compound contain the same elements combined in the same proportions


The smallest particle of an element that retains the chemical characteristics of the element


A collection of atoms chemically bonded together in characteristic proportions

Chemical Formula

A notation for representing elements and compounds; consists of the symbols of the constituent elements and subscripts identifying the number of atoms of each element in one molecule

Chemical Equation

Notation in which chemical formulas express the identities and their coefficients express the quantities of substances involved in a chemical reaction

Chemical Bond

The energy that holds two atoms in a molecule together


A process for separating particles suspended in a liquid or gas by passing the mixture through a medium that retains the particles


A separation technique in which the more volatile components of a mixture are vaporized and then condensed, thereby separating them from the less volatile components


Easily vaporized

Intensive Property of Matter

A property that is independent of the amount of substance present

Extensive Property of Matter

A property that varies with the quantity of the substance present

Examples of Intensive Properties

Color, Melting and Boiling Temperatures, Malleability, Hardness, Shine, Flammability

Examples of Extensive Properties

Width and Length, Mass, Volume

Physical Property of Matter

A property of a substance that can be observed without changing it into another substance

Chemical Property of Matter

A property of a substance that can be observed only by reacting it to form another substance


The ration of the mass of an object to its volume


A form of mater that has a definite shape and volume


A form of matter that occupies a definite volume but flows to assume the shape of its container


A form of matter that has neither definite volume nor shape and that expands to fill its container

Scientific Method

An approach to acquiring knowledge based on observation of phenomena, development of a testable hypothesis, and additional experiments that test the validity of the hypothesis


A tentative and testable explanation for an observation or a series of observations


A general explanation of a widely observed phenomenon that has been extensively tested and validated

Significant Figures

All the certain digits in a measured value plus one estimated digit. The greater the number of ___________ _______, the greater the certainty with which the value is known


The extent to which repeated measurements of the same variable agree


Agreement between an experimental value and a true value

Conversion Factor

A fraction in which the numerator is equivalent to the denominator but is expressed in different units, making the value of the fraction 1

Kelvin (K)

The SI unit of temperature

Absolute Zero

The zero point on the Kelvin temperature scale; theoretically the lowest temperature possible