Bell Ringers

This is where you will find bell-ringers that are completed in class.  All bell-ringers will be completed in your science composition book.  You are responsible for completing ALL bell-ringers, even on days that you are absent from school.  The bell-ringers will be graded near the end of the nine-weeks grading period.

You should attempt each bell-ringer.  We will go over the answers in class.  IT IS OK TO MAKE A MISTAKE ON THE BELL-RINGER.  IT IS NOT OK TO CHOOSE TO NOT DO THE BELL-RINGER.

Bell Ringers

January 7

  1. What is chemistry?
  2. What are 4 important things you should do at the end of every lab?
  3. When can you eat or drink in the lab?

January 9

What is density?

January 10

  1. What is matter?
  2. What is the formula for density?

January 13

  1. What is made of matter?

January 14

  1. What is the density of the 160 g object? (Draw a cube on the board for vol)

January 16

  1. What is mass?
  2. What units do you use for mass? Volume? Density?

January 17

  1. Which phase of matter has the least energy?
  2. Which phase of matter has the most energy?

January 21

  1. 1. What are the particles that make up elements and compounds?

January 22

  1. What is an atom?

January 23

  1. What are atoms made of?

January 24

  1. List the subatomic particles.

January 27

  1. List the subatomic particles.
  2. Where were the electrons located in Thomson’s model of an atom?

January 28

  1. What was Thomson’s atomic theory?
  2. What was Dalton’s theory?

January 31

  1. What is the atomic number?
  2. What is the mass number?

February 3

  1. What is a compound?
  2. Give example of a compound.

February 4

  1. Where are the electrons located in Thompson’s model?
  2. What element is number 36?

February 6

  1. How many energy levels do each of the following elements have…
  2. strontium, polonium, selenium and cerium?
  3. How many valence electrons do the following elements have…
  4. Iodine, Gallium, Francium and Arsenic?

February 7

  1. Draw the electron dot diagram for Cl, Ca, and Na.
  2. Draw the electron dot diagram for Ar, Ga, and Sr.

February 11

  1. How many valence electrons do most atoms have when they

are stable?

February 12

  1. What type of ion is Selenium?
  2. What type of ion is Cesium?
  3. What type of ion is Cobalt (III)?

February 13

  1. How many valence electrons does Iodine have?
  2. How many valence electrons does Bismuth have?

February 14

  1. Are you made of copper and Tellerium? Because you’re…
  2. Finish the pun:

February 18

  1. What is an element?
  2. Give 5 examples of an element.

February 19

  1. Draw the Bohr model for Potassium.
  2. Draw the Bohr model for Selenium.

February 20

  1. Draw the Bohr model for Calcium.
  2. Draw the Bohr model for Germanium.

February 21

  1. What are the charges of the subatomic particles?
  2. How many valence electrons does Nitrogen have?

March 2

  1. How many valence electrons does Bromine have?
  2. How many valence electrons does He have?
  3. What is the most common isotope of Carbon?

March 3

  1. What type of ion is Silicon?
  2. What type of ion is Zinc?

March 4

  1. How many neutrons are found in each of the following elements:
  • Bromine
  • Mercury
  • Magnesium

March 5

  1. How many electrons does N-3 have?
  2. How many electrons does Sr+2 ?