Lesson 5- What Causes Substances to Change? Section 2- Heating and Cooling Causes Changes Section 3- Mixing Substances Causes Changes
Unit 3~ Changes in Matter
If you want properties of matter to change, you have to do something to the matter. Adding energy to matter - Heating matter ~ Heating water causes it to evaporate Removing energy from matter- Cooling Matter ~ Putting water in a freezer removes the energy causing ice Mixing ~ Can cause matter to dissolve and allows a reaction and new substances with new properties
Section 1- Changes to Substances have Consistent Causes
Define the the following words: contract expand
Time to Play.... Capture the Flag!
Q: What are two different ways that substances can change?