Atoms and Ions
Go Isotopes!
Nuclear Chem
100

I have an atomic number of 42... how many protons and electrons do I have?

How much is 42 electrons and protons?
100
Isotopes have a different number of....
what is a neutron?
100

What is the weakest kind of particle - and what can it penetrate?

What is an alpha particle - and what is human  skin or paper?

200
Potassium exists as a +1 charge inside our bodies. How many electrons does Potassium have?
How much is 18 electrons?
200

Write the symbolic and hyphen notation for Krypton (OK I might be a LITTLE biased)...

symbolic - atomic # and mass # switched

hyphen notation : element followed by dash and mass number 

200
In your own words, what is the difference between a chemical reaction and a nuclear reaction?

Chem reaction -rearrangment of atoms 

Nuclear - reaction occurs within the NUCleus 

300

Which of the following explain how an ion is formed? Explain your answer...

a. adding or subtracting protons to/from an atom

b. adding or subtracting neutrons to/from an atom

c. adding or subtracting electrons to/from an atom

What is answer choice c? 

300
Element Z has an average atomic mass of 156. It has the following isotopes:

Z-152, Z-155, and Z-159. Which Isotope is most abundant and why?

What is Z-155? Because it is the number closest to 156.

300

What atom is produced when Thorium-234 undergoes alpha decay? Write the equation. 

(234,90) Th -> (230, 88) Ra + (4,2) He
400

Hafnium (Hf) has a charge of 5+. How many electrons does it have?

How much is 67? (6 7 ... haha)

400

Calculate the average atomic mass of the following data:

Carbon-12: 98.89% and Carbon-13: 1.11%

What is 12.01 amu?

400

A 64.0 gram sample of radioactive isotope decays to 1.00 grams in 360.0 seconds. What is the half-life of the isotope?

What is 60 seconds? 

500

Chemistry Theatre: Bring your group up to model the atom: have three people be a proton, neutron and electron... and where they are in the atom. 

protons and neutrons in the middle, electrons circling outside

500

Give the symbolic notation (charges included if applicable) for the following element:

protons: 80 

neutrons:130

electrons: 76

Upper Left: 210

Lower Left:80

Hg4+

500

The half life of element A is 250.0 years.

You currently have 48.5 grams of the original sample. How many grams would have been in the sample 1500 years ago? 

How much is 3,104 grams?

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