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Chapter 2 Concepts

Published on Dec 16, 2015

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PRESENTATION OUTLINE

1.

MATTER

  • ANYTHING THAT HAS MASS AND TAKES UP SPACE
  • Light and sound are not matter
  • Air is matter
  • Everything is made up of matter
Photo by blmiers2
2.

ELEMENT

  • A substance that cannot be broken down anymore chemically
  • Everything has elements
  • They are made up of matter
  • Made of atoms
Photo by Kikishua
3.

ATOM

  • The smallest unit of a element that maintains its chemical properties
  • Each element is made of one atom
Photo by p2bg
4.

MOLECULE

  • A group of Atoms that are held together by chemical forces
Photo by Leo Reynolds
5.

COMPOUND

  • A substance made up of atoms of two or more different elements joined b chemical bonds
Photo by Claudio.Ar
6.

PURE SUBSTANCE

  • a sample of matter, either a single element or a single compound, that has definite chemical and physical properties
Photo by CUSQUENIAN
7.

MIXTURE

  • a group of atoms that are held together by chemical forces; a molecule is the smallest unit of matter that can exist by itself and retain all of a substance’s chemical properties
Photo by Domiriel
8.

HETEROGENEOUS

  • It is a type of mixture that is not evenly mixed
Photo by ecstaticist
9.

HOMOGENEOUS

  • It is a mixture evenly mixed together
Photo by JP Carrascal
10.

DENSITY

  • D=M/V
Photo by Curtis Gregory Perry
11.

Physical Change

  • a change of matter from one form to another without a change in chemical properties
Photo by Mikko Luntiala
12.

Chemical Change

  • a change that occurs when one or more substances change into entirely new substances with different properties
Photo by GollyGforce

Grace McDonald