Science LessonFor September 20th

Isotopes

Teacher Instructions• Please read Instructions before students come to

class.• Go to Brainpop.com• Login:

– Username:Edhpop– Password:Edhpop1

• After logging in cut and paste the following URL into web address bar.

• http://www.brainpop.com/science/matterandchemistry/isotopes/

• Link will take you to video lesson on Isotopes for Chemistry Instruction.

• Note: Students might have need to see video an extra time to answer questions (teacher discretion).

Chemistry - Isotopes

• Essential Question:– What is an Isotope

– Watch BrainPop video lesson and answer questions.

– This assignment is due the next time you are scheduled for Chemistry Class.

– http://www.brainpop.com/science/matterandchemistry/isotopes/

Question 1

• Fluorine has an atomic number of 9. What can you conclude about an atom of fluorine from this fact?

A. It has nine protonsB. It weighs nine gramsC. It has nine electron shellsD. It has a boiling point of 9 degrees

Celsius

Question 2

• In what part of an atom can protons be found?

A. Inside the electronsB. Inside the neutronsC. Inside the atomic nucleusD. Inside the electron shells

Question 3

• An atom of fluorine has an atomic mass of 19 amu. Keeping in mind that its atomic number is 9, what can you infer about this atom?

A. It has nine neutronsB. It has nine protonsC. It has ten neutronsD. It has ten protons

Question 4

• If a sulfur atom has 16 protons, 16 electrons, and 16 neutrons, its atomic mass is:

A. 16B. 32C. 48D. 64

Question 5

• If a hydrogen atom has 1 proton, 1 electron, and 1 neutron, its atomic number is:

A. 1B. 2C. 3D. 4

Question 6

• What do carbon-12 and carbon-14 have in common?

A. They have the same number of protons

B. They have the same number of neutrons

C. They have the same atomic massD. They have the same atomic weight

Question 7

Carbon-14 Carbon-12 Location

Protons

Electrons

Neutrons