CK-12 Physical Science Concepts - For Middle School

2.9. Chemical Change http://www.ck12.org 2.9 Chemical Change Define chemical change, and give examples of chemical changes. Lis ...

http://www.ck12.org Chapter 2. Matter Identifying Chemical Changes Most chemical changes are not as dramatic as exploding firewo ...

2.9. Chemical Change http://www.ck12.org Summary A chemical change occurs whenever matter changes into an entirely different su ...

http://www.ck12.org Chapter 2. Matter 2.10 Conservation of Mass Describe an example of mass remaining the same in a change of m ...

2.10. Conservation of Mass http://www.ck12.org FIGURE 2.18 Burning is a chemical process. A:You could find the mass of a quantit ...

http://www.ck12.org Chapter 2. Matter Describe an example of the law of conservation of mass. ...

2.11. States of Matter http://www.ck12.org 2.11 States of Matter Define state of matter, and list states of matter. Identify st ...

http://www.ck12.org Chapter 2. Matter oil, gasoline, and mercury, which is the only metal that commonly exists as a liquid. Exam ...

2.11. States of Matter http://www.ck12.org FIGURE 2.20 while the shape of the liquid in the graduated cylinder is tall and narro ...

http://www.ck12.org Chapter 2. Matter 2.12 Solids Identify properties of matter in the solid state. Compare crystalline and amo ...

2.12. Solids http://www.ck12.org FIGURE 2.21 Amorphous means “shapeless.” Particles of amorphous solids are arranged more-or-les ...

http://www.ck12.org Chapter 2. Matter FIGURE 2.23 Vocabulary solid: State of matter that has a fixed volume and fixed shape. E ...

2.12. Solids http://www.ck12.org FIGURE 2.24 ...

http://www.ck12.org Chapter 2. Matter 2.13 Liquids Identify properties of matter in the liquid state. Describe surface tension ...

2.13. Liquids http://www.ck12.org FIGURE 2.25 Surface Tension and Viscosity Two unique properties of liquids are surface tension ...

http://www.ck12.org Chapter 2. Matter Summary A liquid is a state of matter in which particles can slip past one another and ta ...

2.13. Liquids http://www.ck12.org FIGURE 2.28 ...

http://www.ck12.org Chapter 2. Matter 2.14 Gases Identify properties of gases. Explain why gases exert pressure. Describe how a ...

2.14. Gases http://www.ck12.org FIGURE 2.29 creates pressure. Pressure is defined in physics as the amount of force pushing agai ...

http://www.ck12.org Chapter 2. Matter Earth’s surface, so it contains a huge number of gas particles. Most of them are concentra ...