Atoms

Multiple Choice

Which of the following is NOT a part of an atom?

• Nucleus

• Electron

• Proton

• Molecule

Open Ended

Why is understanding atomic structure important in science?

Multiple Choice

Which subatomic particle determines the identity of an element, and how is this shown in the example of carbon?

• Proton; Carbon has 6 protons

• Neutron; Carbon has 6 neutrons

• Electron; Carbon has 6 electrons

• Proton; Carbon has 12 protons

Open Ended

How does the periodic table help us understand the properties and relationships of different elements?

Multiple Choice

Which of the following statements about subatomic particles is correct?

• Protons have a positive charge and are found in the nucleus.

• Neutrons have a negative charge and are found outside the nucleus.

• Electrons have a positive charge and are found in the nucleus.

• Protons have no charge and are found outside the nucleus.

Multiple Select

Select all the correct statements about the structure of an atom as shown in the diagram.

• Electrons are found outside the nucleus.

• Protons are located in the nucleus.

• Neutrons are located in the nucleus.

• Electrons have a positive charge.

Fill in the Blank

The nucleus of an atom contains ___ and ___.

Open Ended

Explain why electrons in shells farther from the nucleus have higher energy than those closer to the nucleus.

Multiple Choice

Which element has its electron shells completely filled with 2, 8, and 8 electrons?

• Helium

• Neon

• Argon

• Oxygen

Open Ended

Explain why the electron configuration 2-8-8 is significant for the elements shown in the diagrams.

Multiple Choice

What is the maximum number of electrons that can fit in the first three shells of an atom, according to the simple shell model?

• 2, 8, 8

• 2, 8, 18

• 2, 6, 8

• 2, 8, 10

Open Ended

Describe the structure of a carbon atom, including the arrangement of its electrons in shells.

Multiple Choice

Which of the following statements about atomic mass and atomic number is correct?

• Atomic number is the sum of protons and neutrons.

• Atomic mass is always a whole number.

• Atomic number identifies the element.

• Atomic mass is the number of electrons.

Fill in the Blank

The atomic number of an element is equal to the number of ___ in its atom.

Multiple Choice

Which of the following statements correctly describes the relationship between protons, neutrons, and electrons in a neutral atom?

• Protons = Neutrons = Electrons

• Protons = Electrons, Neutrons = Atomic Mass - Atomic Number

• Protons = Atomic Mass, Electrons = Atomic Number

• Neutrons = Electrons, Protons = Atomic Mass

Open Ended

Explain how to determine the number of electrons in an ion if you know its atomic number and charge.

Multiple Choice

How does the number of electrons in a cation compare to the number of protons?

• There are more electrons than protons

• There are fewer electrons than protons

• There are equal numbers of electrons and protons

• There are no electrons in a cation

Fill in the Blank

Valence electrons are important because they ___.

Multiple Select

Which of the following atoms tends to form a negatively charged ion based on its electron configuration?

• Oxygen (Z=8)

• Sodium (Z=11)

• Chlorine (Z=17)

• Aluminum (Z=13)

Open Ended

List three key terms related to atomic structure and briefly define each.

Open Ended

After learning about atomic structure and ions, what is one question you still have or something you would like to know more about?

Multiple Choice

What are the two main parts of an atom?

• Nucleus and electrons

• Protons and neutrons

• Electrons and protons

• Shells and ions

Multiple Choice

According to the Bohr model for early elements, what are the maximum numbers of electrons that can be accommodated in the first, second, and third shells?

• 1st shell: 2, 2nd shell: 8, 3rd shell: 8

• 1st shell: 2, 2nd shell: 8, 3rd shell: 18

• 1st shell: 2, 2nd shell: 6, 3rd shell: 10

• 1st shell: 2, 2nd shell: 4, 3rd shell: 8