CK-12 Physical Science Concepts - For Middle School

2.14. Gases http://www.ck12.org Explore More Examine this sequence of photos in theFigure2.32, and then answer the questions bel ...

http://www.ck12.org Chapter 2. Matter ...

2.15. Plasma http://www.ck12.org 2.15 Plasma State properties of matter in the plasma state. Identify where plasma is found. T ...

http://www.ck12.org Chapter 2. Matter MEDIA Click image to the left for use the URL below. URL: http://www.ck12.org/flx/render/e ...

2.15. Plasma http://www.ck12.org Explore More Read the article about plasma at the following URL, and then answer the questions ...

http://www.ck12.org Chapter 2. Matter 2.16 Kinetic Theory of Matter State the kinetic theory of matter. Relate kinetic energy t ...

2.16. Kinetic Theory of Matter http://www.ck12.org this force of attraction. It’s like a tug of war between opposing sides, with ...

http://www.ck12.org Chapter 2. Matter Vocabulary kinetic theory of matter: Theory that all matter consists of constantly moving ...

2.17. Changes of State http://www.ck12.org 2.17 Changes of State Define change of state. Identify processes that cause changes ...

http://www.ck12.org Chapter 2. Matter FIGURE 2.36 FIGURE 2.37 Q:What happened to the chocolate? A:The chocolate melted. It chang ...

2.17. Changes of State http://www.ck12.org again. Q:Why is energy always involved in changes of state? A:The energy of particles ...

http://www.ck12.org Chapter 2. Matter 2.18 Freezing Describe what happens to the particles of matter when it freezes. Define fr ...

2.18. Freezing http://www.ck12.org FIGURE 2.38 water. You can see some examples in theTable2.3. The freezing point of pure water ...

http://www.ck12.org Chapter 2. Matter Adding antifreeze to water lowers its freezing point. Based on this statement, what can y ...

2.19. Melting http://www.ck12.org 2.19 Melting Describe what happens to particles of matter when it melts. Define melting point ...

http://www.ck12.org Chapter 2. Matter Other substances that are normally solids on Earth can also be heated until they melt. You ...

2.19. Melting http://www.ck12.org The temperature at which a substance melts is called its melting point. The melting point of ...

http://www.ck12.org Chapter 2. Matter 2.20 Boiling Describe how vaporization occurs. Contrast vaporization and evaporation. Def ...

2.20. Boiling http://www.ck12.org Vaporization vs. Evaporation Vaporization is easily confused with evaporation, but the two pro ...

http://www.ck12.org Chapter 2. Matter Name two factors that affect the boiling point of a substance. Compared with the molecule ...