Structure of Atoms

Multiple Choice

What are the 3 particles that make-up the atom?

• protons, neutrons, and isotopes
• neutrons, isotopes, and electrons
• positives, negatives, and electrons
• protons, neutrons, and electrons

Reorder

Place the following atomic models in order, from earliest to latest:

• Dalton (Solid Sphere)

• Thomson (Plum Pudding)

• Rutherford (Nuclear)

• Bohr (Planetary Model)

• Schrodinger (Quantum)

1

2

3

4

5

• 1
• 2
• 3
• 4
• 5

Multiple Choice

What did Democritus believe about the nature of matter?

• Matter is continuous and can be divided infinitely.

• Matter is composed of small, indivisible particles.

• Matter is made up of earth, water, air, and fire.

• Matter can be transformed into gold.

Multiple Choice

Why can mass seem to "disappear" in open systems during a chemical reaction?

• Because mass can be destroyed in an open system.

• Because some products may be gases that escape into the atmosphere.

• Because the Law of Conservation of Mass does not apply in open systems.

• Because the reactants are not fully used up in the reaction.

Multiple Choice

What significant discovery did J.J. Thomson make in 1897?

• The neutron

• The proton

• The electron

• The nucleus

Multiple Choice

What significant discovery did James Chadwick make in 1932?

• The electron

• The neutron

• The proton

• The nucleus

Multiple Choice

What part of the diagram is d. pointing to?

• Electron Cloud

• Protons

• Neutrons

• Nucleus

Multiple Choice

How many protons and neutrons are in an atom of Manganese-52?

• 25 protons and 52 neutrons

• 27 protons and 25 neutrons

• 25 protons and 27 neutrons

• 25 protons and 25 neutrons

• 52 protons and 27 neutrons

Multiple Choice

Using the picture, you can determine that Carbon-13 has ____ neutrons.

• 13

• 6

• 12

• 7

Multiple Choice

The vast majority of the volume of the atom is found in the __________________.

• gluons

• nucleus

• electron cloud

• quarks

Open Ended

1. Use the data in the chart…

a. What would our average atomic mass be closest to?

b. Calculate the percent abundance of each isotope

c. Calculate the average atomic mass of the sample.

d. Which element do you believe this is?

Multiple Choice

What is true about the carbon atom depicted in the image?

• This carbon atom has 13 protons

• There are 13 subatomic particles in the electron cloud

• The mass number of this carbon atom is 13

• The atomic number of this carbon atom is 13

Multiple Choice

What is the ATOMIC MASS of the isotope Carbon-14?

• 14

• 6

• 12

• 20

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident