Quiz 2 - Atomic Structure

Quiz 2 - Atomic Structure

11th - 12th Grade

25 Qs

quiz-placeholder

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Quiz 2 - Atomic Structure

Quiz 2 - Atomic Structure

Assessment

Quiz

Chemistry

11th - 12th Grade

Medium

FL.SC.912.P.8.4, NGSS.MS-PS1-1, NGSS.HS-PS1-1

+4

Standards-aligned

Created by

Frederic Nau

Used 10+ times

FREE Resource

25 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

George's science teacher has a mixture of table salt and iron filings.
Which of the following would be the best way to separate the salt and the iron filings?
A.  use a magnet to pull the iron filings from the salt
add food coloring to the mixture to make the salt change color
pour them into a beaker of water and see if the iron filings float
heat up the mixture to see if the salt or the iron filings will burn away

2.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What was Bohr's basic proposal about the atom?

An electron remains in a fixed position in the space around the nucleus.

An electron is found in a specific circular path, or orbit, around the nucleus.

An electron oscillates, or moves back and forth, within one small region of space in the atom.

An electron readily exchanges position with either a proton or a neutron.

3.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

How does the quantum mechanical model differ from the Bohr model in the way it describes the arrangement of electrons in atoms?

The quantum mechanical model describes electrons as moving anywhere in the atom, not specific circular orbits.

The quantum mechanical model describes electrons as moving through specific orbits, and not staying in one place.

The quantum mechanical model places electrons in fixed positions, not moving through specific orbits or orbitals.

The quantum mechanical model describes electrons as moving through cloud-like orbitals, not specific circular orbits.

4.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The isotopes of hydrogen-1 and hydrogen-2 make up nearly all of the hydrogen found in nature. The mass of hydrogen-1 is 1.0078 amu and the mass of hydrogen-2 is 2.0141 amu. Becuase the average atomic mass of hydrogen is 1.0079 amu what can be concluded about the 2 isotopes of hydrogen?

Hydrogen-1 is by far the more abundant isotope.

Hydrogen-2 is by far the more abundant isotope.

Hydrogen-1 and hydrogen-2 are about equally abundant.

The isotope hydrogen-3 does not exist in nature.

Answer explanation

Media Image

Since the average atomic mass is closer in value to the mass of hydrogen-1, we can assume that it is more abundant relative to hydrogen-2.

Tags

SC.912.N.1.1.5

SC.912.P.8.4

FL.SC.912.N.1.1.5

FL.SC.912.P.8.4

5.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

What are three types of subatomic particles?

Ions, neutrons, nucleus

Protons, electrons, nucleus

Muons, ions, electrons

Protons, electrons, neutrons

Tags

FL.SC.912.P.8.4

6.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

The atomic mass of oxygen is 15.999 amu. What does this value equal?

The mass of a randomly chosen oxygen atom

The mass of every oxygen atom

The mass of an atom of the most common oxygen isotope

The weighted average mass of oxygen atoms in nature

Answer explanation

The weighted average is determined by the relative abundance of each oxygen atom and isotopes.

Tags

FL.SC.912.P.8.4

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

An element has an atomic number of 76. The number of protons and electrons in a neutral atom of the element are ____.

152 protons and 76 electrons

76 protons and 0 electrons

38 protons and 38 electrons

76 protons and 76 electrons

Answer explanation

The atomic number also specifies the amount of protons within an element's atom. For a Neutral (charge = 0) atom, the amount of protons and electrons will be equal.

Tags

NGSS.MS-PS1-1

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