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Chemisty Ch. 1

Chapter 1 Test

QuestionAnswer
The study of the composition, structure, and properties of matter and the changes it undergoes. Chemistry
Any substance with a definite composition. Compound
Lgical approach to solving problems by observing and collecting data formulating hypotheses, testing hypotheses, and formulating theories that are supported by data. Scientific Method
Use of senses to obtain information. Observing
Specific portion of matter in a given region of a space that has been selected for study during and experient or observation. System
Statements that apply to a range of information. Generalizations
Testable statement. Hypotheses
Explanation of how phenomena occur and how events or data are related. Model
Broad generalization that explains a body of facts or phenomena. Theory
Anything that has mass and takes up space. Matter
The amount of three-demensional space an object occupies. Volume
Measure of the amount of matter. Mass
Smallest unit of an element that maintains the properties of the element. Atom
Pure substance made of only one kind of atom. Element
Substance that is made from the atoms of two or more elements chemically bonded. Compound
Smallest unit of a compound that retains all the properties of that compound. Molecule
Property that depends on the amount of matter present. Extensive Property
Property that does not depend on the amount of matter present. Intensive Property
Characteristic that can be observed or measured without changing the identity. Physical Property
A change in a substance that does not ivolve a change in the identity of a substance. Physical Change
Relates o a substances abiliy to undergo changes that transform it into a different substance. Chemical Properties
Change in which one or more substances are converted into different substances. Chemical Change
Blend of two or more kinds of matter, each of which retains its own identity and properties. Mixture
Substance that has a fixed composition and the same characteristics throughout. Pure Substance
An element that is a good conductor of heat and electricity. Metal
An element that is a poor conductor of heat and electricity. Nonmetals
A element that has characters of both metals and nonmetals. Metalloid
Created by: alexisnicole