Lesson 2 Properties of Matter: We reviewed the difference between physical and chemical properties of matter. Then we learned how substances have unique properties called characteristic properties which can be physical or chemical. These physical and chemical properties can be used to identify a substance. Next we compared the characteristic properties of iron pyrite and gold. We created a table of their differences and discovered that miners use density since gold is four times as dense as iron pyrite. Then we learned that the density of gold is 19.3 g/cm³ and we calculated the density of another object to see if could possibly be gold.
Then we took a Quiz on Lesson 2 Properties of Matter.
Assignment: Identify pictures and activities as either chemical or physical change.