Physical Science Unit 2 Day 5

Learning Objective: Students will learn about matter and properties of matter by conducting a lab and will analyze and interpret their data in writing using technical vocabulary (covalent bonds, ionic bonds, ions, valence electrons, electronegativity, reactivity).


Questions:

1. What are egg shells made of? (book)
2. How do dyes work? (book)
3. For a bond to be covalent, the electronegativity difference between the atoms must be:

Answer choices for number 3:

	A. less than 0.5. B. zero. C. less than 1.7. D. over 2.