8.5A Atomic Structure/8.5B Valence Electrons Assessment

Refer to the image. Which of these is NOT found in the nucleus of an atom?

• protons

• neutrons

• electrons

• atomic mass

Tags

NGSS.MS-PS1-1

Which of the following correctly represents the electrical charges of the subatomic particles in the above graphic?

• I - negative charge, II – positive charge, III – no charge

• I - positive charge, II – negative charge, III – no charge

• I - no charge, II – positive charge, III – negative charge

• I - no charge, II – negative charge, III – positive charge

Tags

NGSS.MS-PS1-1

Observe the model of the atom above. In 1913, Niels Bohr proposed a model that illustrates the locations of subatomic particles. While models of the atom have changed with new understanding, the location of the subatomic particles in current models remains similar to Bohr’s model. Which of the following best describes the locations of the three subatomic particles in atoms?      Observe the atom. What subatomic particles are found in the nucleus of the atom, and how does that contribute to the overall charge of the nucleus?

• Neutrons and protons only with an overall negative chaProtons and neutrons are located in the cloud around the nucleus, and electrons are located in the nucleus of the atom.rge

• Neutrons and protons only with an overall poProtons and electrons are located in the cloud around the nucleus, and neutrons are located in the nucleus of the atom.sitive charge

• Neutrons and electrons only with an overall Protons and neutrons are located in the nucleus of the atom, and electrons are located in the cloud around the nucleus. negative charge

• Protons and electrons only with an oveElectrons are located in the nucleus of the atom, and protons and neutrons are located in the cloud around the nucleus.rall neutral charge

Tags

NGSS.MS-PS1-1

An atom of a certain element is solid at room temperature, very stable, conducts electricity, and is magnetic. This atom has an atomic number of 26 and a mass number of 56. 

How many neutrons are in this atom?

• 26

• 30

• 56

• 82

Tags

NGSS.MS-PS1-1

Which of the following best describes the neutron?

• Neutrons have negative charge and similar mass compared to protons.

• Neutrons have no charge and similar mass compared to electrons.

• Neutrons have negative charge and similar mass compared to electrons.

• Neutrons have no charge and similar mass compared to protons.

Tags

NGSS.MS-PS1-1

Which of the following is the atomic number of the atom represented in the graphic?

• 16

• 17

• 18

• 33

Tags

NGSS.MS-PS1-1

When determining an element's identity, what is the most important subatomic particle to examine?

• protons

• neutrons

• electrons

• atomic mass

The most reactive metal is one with ―

• 4 valence electrons

• 1 valence electron

• 2 valence electrons

• 3 valence electrons

An atom has 11 protons, 12 neutrons, and 11 electrons. What is the identity of the element?

• Magnesium

• Vanadium

• Sodium

• Titanium

Tags

NGSS.MS-PS1-1

When determining an element’s chemical properties, the most important subatomic particle to look at is —

• protons

• neutrons

• electrons

• valence electrons