Introduction to the physical and chemical nature of

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Introduction to the physical and chemical nature of

  1. 1. Introduction to the Physical and Chemical Nature of Matter<br />7SCIENCE Wed. April 6<br />
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  3. 3. What is matter?<br />Matter<br />Anything that takes up space and has mass<br />Anything you can touch, taste or smell is matter <br />NOT matter: thoughts, feelings,light, heat <br />An atom is the smallest particle that makes up matter<br />One or more atoms (atom + atom + atom..etc) is called a molecule <br />Ex: one atom of oxygen and two atoms of hydrogen combine to form one water molecule<br />
  4. 4. What makes something a solid, liquid or gas?<br />There are many kinds of matter and these can be in different forms<br />These forms are called states of matter:<br />solid, liquid or gas<br />The physical state of a type of matter depends on: how the atoms or molecules are arranged and how they move<br />
  5. 5. Kinetic Theory of Matter<br />The state of matter is determined by the arrangement and movement of atoms <br />In 1827, a scientist named Robert Brown observed that particles he was studying in water were always moving<br />Developed into an idea called the kinetic theory of matter: all particles in matter are in constant, random motion<br />
  6. 6. Kinetic Theory of Matter<br />Energy of these moving particles is called kinetic energy <br />The higher the temperature, the faster the particles are moving and more likely they will collide into other particles<br />If particles collide, the faster-moving particles (hotter) transfer some energy to the slower-moving particles (cooler)<br />

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