Test One Study Guide - Matter anything that occupies space...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Matter anything that occupies space and has mass; the physical material of the universe Atoms The smallest representative particle of an element Property A characteristic that gives a sample of matter its unique identity Molecule A chemical combination of two or more atoms Gas Matter that has no fixed volume or shape; it conforms to the volume and shape of its container Liquid Matter that has a distinct volume but no specific shape Solid Matter that has both a definite shape and a definite volume Pure substance Matter that has a fixed composition and distinct particles Element A substance that cannot be separated into simpler substances by chemical means Compound A substance composed of two or more elements united chemically in definite proportions Law of definite proportions A law that states that the elemental composition of a pure substance is always the same, regardless of its source Mixture A combination of two or more substances in which each substance retains its own chemical identity Heterogeneous Mixtures that do not have the same composition, properties and appearance throughout Homogenous Mixtures that are uniform throughout Physical properties Properties that can be measured without changing the composition of a substance (color and freezing) Chemical properties Properties that describe a substance's composition and its reactivity; how the substance reacts or changes into other substances Physical change Changes (such as a phase change) that occur with no change in chemical composition Changes of state Transformations of matter from one state to a different one Chemical change Process in which one or more substances are converted into other substances Intensive properties A property that is independent of the amount of material considered (density) Extensive properties A property that depends on the amount of material considered (mass or volume) Scientific method The general process of advancing scientific knowledge by making experimental observations and by formulating hypotheses, theories and laws Scientific laws A concise verbal statement or a mathematical equation that summarizes a wide range of observations and experiences
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

Test One Study Guide - Matter anything that occupies space...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online