Atomic Structure
The dense positively charged core of an atom.
What is the nucleus?
Rutherford is known for this experiment.
What is a the Gold-Foil experiment?
Osmium (Os) has this many protons.
What is 76?
An isotope's abundance is this.
Which is how often it occur in nature?
[Teacher discretion]
An atom is Calcium - 40.
40 is this.
What is the mass number?
The charge of an electron.
What is negative one?
Thomson is famous for using this device in an experiment.
What is a cathode-ray tube?
The atomic mass of Manganese is this.
What is 54.938 amu?
This isotope is more abundant in nature.
Chlorine - 35
Chlorine - 37
Which is Chlorine - 35?
Isotopes have the same number of these.
What are protons?
These particles are in the nucleus of an atom.
What are protons and neutrons?
Rutherford EXPECTED this to happen when he shot alpha particles (+) through gold foil.
What is he expected most of them to bounce back off the foil? (Since the atom was believed to be mostly a positive "dough" - plum pudding model)
A bromine atom gains an electron and becomes an ion. It has this many electrons.
What is 36 electrons?
Si‑28 with a mass of 27.9769 amu.
Si‑30 with a mass of 29.9738 amu.
The percent abundances are 92.23% and 7.77% respectively.
Calculate the average atomic mass of silicon.
What is 28.1321 amu?
Write Rhenium - 186 as a nuclear symbol.
[Teacher discretion]
186,75,Re
DAILY DOUBLE!!!
This is "the perfect gift for that special someone" that Buddy gets his father.
What is holiday themed lingerie?
Rutherford's experiment revealed that most of the alpha particles (+) passed right through the foil. A small minority of particles experienced massive deflections. He concluded this about the structure of the atom.
Which is that atoms are mostly empty space with a dense positive core?
Tin - 118 has this many neutrons.
What is 68 neutrons?
Element X has three isotopes:
The average atomic mass of Element X is 11.32 amu.
Determine the missing percent abundance of X‑11.
What is 48.4%?
True or False: Every element has stable isotopes.
False
The factor by which a proton outweighs an electron.
(Approximately)
What is ~2,000x?
Explain Thomson's experimental findings and his conclusions.
Which are that cathode rays are deflected in the presence of a magnetic (charged) field, and therefore, the particles that make up cathode rays must be charged particles as well?
(He also calculated the mass of these particles, i.e. electrons.)
Strontium and chlorine form an ionic compound. The strontium atoms have this many electrons.
What is 36 electrons?
Sn‑118 with a mass of 117.9016 amu.
Sn‑120 with a mass of 119.9022 amu.
The percent abundance of Sn‑120 is 57.4%.
Find the average atomic mass of tin.
What is 119.0499 amu?
DAILY DOUBLE!!!
These are the 4 main food groups (for elves).
https://www.youtube.com/watch?v=7gPOwTRxJV8&pp=ygUVZWxmIG1vdmllIGZvb2QgZ3JvdXBz
What are:
-Candy
-Candy Cane
-Candy Corn
-Syrup