1. Compare the size of a atom with the size of a flea?
Question One
Compare the size of a atom with the size of a flea?

2. Question 2
Why are there two elements in H2O?

3. If there are 12 protons in an atom, then what atom is it?
Question 3
If there are 12 protons in an atom, then what atom is it?

4. Why is the Periodic Table arranged by the Atomic Number?
Question 4
Why is the Periodic Table arranged by the Atomic Number?

5. Question 5
This model is a model of what atom?

6. Why is the charge of the nucleus positive?
Question 6
Why is the charge of the nucleus positive?

7. Why is the atomic number of Hydrogen one?
Question 7
Why is the atomic number of Hydrogen one?

8. 8 Explain the different ways the Periodic Table is arranged.
Atomic Number
Metals, Metalloids, and Nonmetals
Valence Electrons (Groups or Families)

9. Question 9
Which of these best describes one of the subatomic particles that could be found at location X in the model of an atom shown above? A. It has mass but no charge. B. It has no mass and a positive charge. C. It has a large mass and a negative charge. D. It has no mass and an equal number of positive and negative charges.

10. Question 10
How many atoms are in CO2?