CHAPTER 5 REVIEW HOW MATTER CHANGES. 1. What is an example of chemical change? a. paper that is cut into pieces b. ice that melts into water c. wood that.

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Presentation transcript:

CHAPTER 5 REVIEW HOW MATTER CHANGES

1. What is an example of chemical change? a. paper that is cut into pieces b. ice that melts into water c. wood that has burned to ashes d. clay that is rolled into a ball

2.In which state of matter do particles move the fastest? a.solid b.liquid c.gas d.in the cold

3.A solid changes into a liquid. This process is known as __________. 4.A gas cools and changes into a liquid. This process is known as __________. 5.A liquid changes into a gas. This process is known as ___________. Word Bank melting freezing boiling condensation

6.Heat causes particles to a.move slower. b.move closer together. c.move faster. d.have no effect on each other. 7.Why is salt water a solution? a.It is a mixture of salt and water. b.Salts are dissolved in water. c.The salt can be separated by hand.

8. __________ is the measure of how hot or cold matter is. 9.The total energy of the particles of matter is _________________. 10. Matter that is made of two or more substances that are physically combined is called a ___________. 11. The flow of thermal energy from a warm area to a cooler area is called ____________. mixturetemperature heatthermal energy

12.__________ is a change in the way matter looks without changing into a new kind of matter. 13.A _______________ is newly formed matter from a chemical reaction. 14. A ____________ is the matter you start with in a chemical reaction. 15. A ___________ is a mixture in which particles are evenly mixed and have the same properties. solutionproduct physical changereactant

QUESTION #16 MIXTURE VS SOLUTION Mixture Particles are mixed together, not necessarily evenly can be easily separated Example: sand & water Solution Particles are evenly mixed. not easily separated a substance dissolves Example: seawater

by hand separated by density levels changing state (boiling & evaporation) Name 3 ways 17. MATTER CAN BE SEPARATED OR REVERSED.

18. You are combining flour, sugar, eggs, and other ingredients to make a cake. You bake the cake. How do you know that a chemical reaction has taken place?