1. BELLRINGERS 3rd SEMESTER

2. BELLRINGERS
DATE #
Complete sentences
DON’T REWRITE THE QUESTIONS

3. BELLRINGER #1 January 24th, 2013
What is one goal that you have for the 2nd semester in either this class or any of your other classes?
What is one thing that you are looking forward to in the 2nd semester?

4. BELLRINGER #2 September 11th, 2013 What is the charge of a proton?
What is the relative mass of an electron?
What is an atom mostly made up of?

5. BELLRINGER #3 Cr September 12th, 2013 24 51.996
What is the Atomic Number for this element?
What is the atomic mass for this element?
How many Protons, neutrons and electrons does this element have?

6. BELLRINGER #4 September 16th, 2013
What three groups are the elements classified as on the periodic table?
What is another name for the rows of the periodic table?
3. What is another name for the columns of the periodic table?

7. BELLRINGER #5 September 17th, 2013
Draw a Bohr Model for the following elements:
- Oxygen
- Helium
- Chlorine

8. BELLRINGER #6 September 19th, 2013
1. Draw a Lewis Dot Structure for the following elements:
- Oxygen
- Helium
- Chlorine

9. BELLRINGER #7 September 30th, 2013 How is an Isotope formed?
How is an Ion formed?

10. BELLRINGER #8 October 1st, 2013
The alkali metals tend to bond with which group?
Give one difference between a metal and nonmetal?
Draw the ion for an atom with 15 protons, 16 neutrons and 18 electrons.

11. BELLRINGER #9 October 7th, 2013
Give an example of an ionic bond using 2 different elements.
How are paired valence electrons different than unpaired valence electrons?

12. BELLRINGER #10 October 9th, 2013
Give an example of a covalent bond using 2 different elements.
Complete an Covalent Bond for the following:
Hydrogen and Oxygen

13. BELLRINGER #11 October 10th, 2013 Write the formula for the following:
Potassium chloride
Sodium sulfide
Beryllium oxide

14. BELLRINGER #12 October 14th, 2013
What is the difference between a superscript, a subscript and a coefficient?

15. BELLRINGER #13 October 14th, 2013 Balance the following equations:
MgO → Mg O2
Cl NaBr → NaCl Br2

16. BELLRINGER #14 October 15th, 2013
What is the correct symbol for an ion of chlorine?
In the compound CO2, are the electrons shared or transferred?

17. BELLRINGER #15 October 15th, 2013
Give an example of a physical property.
Give an example of a chemical property.
Give an example of a physical and chemical change.