A. solid, B. liquid, C. gas, D. none of these

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Monatomic = “mono” + “atomic”” “mono” = one

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Presentation transcript:

A. solid, B. liquid, C. gas, D. none of these QUESTION: What physical state of matter is being described by the following phrase: “particles are as close to one another as possible and unable to move” A. solid, B. liquid, C. gas, D. none of these Matter made up of tiny particles (atoms and molecules). Molecules are groups of atoms. Gas: particles very far apart -- explains why a gas is easily compressed; Solid and Liquid: particles very close together; explains why solids and liquids are not easily compressed Motion of particles: least restricted in gas – explains why gas fills entire container, most restricted in solids – explains why solid holds its shape BUT… particles are always in motion, even at absolute zero temperature! Motion slows down at lower temperatures. What physical state of matter is being by described the following phrase: “particles are as close to one another as possible and unable to move” A. solid, B. liquid, C. gas, D. none of these PAUSE CLICK All matter is made up of tiny particles called atoms and molecules. Two or more atoms bound together are called a molecule. The particles are farthest from each other in a gas, and are much closer together in liquids and solids. This explains why gases are easily compressed, while solids and liquids are not. The motion of particles is also least restricted in a gas. This explains why a gas completely fill whatever container it is placed into. The motion of particles is most restricted in solids. This explains why solids have a definite shape. However… atoms are always in motion, whether they are in a solid, liquid, or gas, even at the lowest possible temperature. CROSS OUT “unable” Therefore, the correct answer is D. None of these. CLICK PAUSE END RECORDING

Video ID: 1-2-3 © 2008, Project VALUE (Video Assessment Library for Undergraduate Education), Department of Physical Sciences Nicholls State University Author: Glenn V. Lo Narrator: Funded by Louisiana Board of Regents Contract No. LA-DL-SELECT-13-07/08