History of Models
Isotopes
Atomic
Mass & Mass Number
Subatomic Particle
I don't know chemistry
100

What Rutherford discovered with the Gold Foil experiment.

It discovered that the nucleus is dense and that the atom is mostly empty space

100
What is a good definition for an isotope?
What is each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties.
100

How do you calculate the mass number of an element?

What is add the # of protons with the # of neutrons.

100
What are the charges on protons, neutrons, and electrons?
Protons are Positive+, Neutrons are Neutral (0), and Electrons are Negative (-)
100

Where did the last summer olympic games took place?

Paris (France)

200

What is the experiment in which Thomson discovered the electron

The Cathode Ray tube experiement

200

how many neutrons are in Calcium-44 Isotope:

24 neutrons

200

What is the average atomic mass of Carbon?

Around 12.011 amu (periodic table)

200

What is the location of the protons, electrons and neutrons?

Protons and Neutrons are in the nucleus.

Electrons are in the orbitals(shells)

200

What is the closest planet to the Sun?

Mercury

300

The modern model (wave mechanical) show that electrons are found in 

regions called orbitals

300

How many protons has a Chlorine-37 Isotope.

If it is chlorine it has 17 protons

300

Chlorine-35 has an abundance of 75.77% in the atmosphere and Chlorine-37 has an abundance of 24.23%. Show a numerical set up to calculate the average atomic mass of Chlorine?

((75.77)(35)+(24.23*37))/100

300

What is the mass of each subatomic particles?

Protons and Neutrons = 1 amu (atomic mass unit)

Electron = 0 amu

300

What is the largest mammal on Earth?

The blue whale

400

What id the model we will use in this class

The Bhor model

400

How many neutrons are in C-14

8 neutrons

400

Neon-20 has an abundance of 90.48% in the atmosphere, Neon-21 has an abundance of 0.27% and Neon-22 has an abundance of 9.25%. Show a numerical set up to calculate the average atomic mass of Neon?

((20)(90.48)+(21)(0.27)+(22)(9.25))/100

400

Which particle define the element?

The proton

400

Who lives in a pineapple under the sea?

Spongebob 

500

In the late 1800, the cathode ray tube experiment allowed the discovery of:

the electrons

500

State in term of subatomic particle one similarity and one difference between K-39 and K-40

.

Similarity: Both isotopes K-39 and K-40 have 19 protons

Difference: K-39 and 20 neutrons and K-40 have 21 neutrons

500

Oxygen-16 has an abundance of 99.76% in the atmosphere and Oxygen-18 has an abundance of 0.201%. Would you expect the average atomic mass of Oxygen to be closer to 16amu or 18amu? Why?

Because 99.76% of the Oxygen in the atmosphere is Oxygen-16, I would expect the average atomic mass to be closer to 16 amu.

500

The atomic number is always equal to ?

The number of protons

500

What is the largest ocean on Earth?

The pacific ocean

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