The total number of neutrons in the nucleus of any atom is equal to the

mass number minus the atomic number

atomic number minus the mass number

The nucleus of an atom has all of the following characteristics EXCEPT that it

contains nearly all of the atom’s volume

contains nearly all of the atom’s mass

An atom is electrically neutral because

the numbers of protons and electrons are equal

neutrons balance the protons and electrons

nuclear forces stabilize the charges

the numbers of protons and neutrons are equal

The atoms in Group A are different from the atoms in Group B because only the atoms in Group A have

their outer energy levels filled with electrons

three energy levels of electrons

arrangements typical of nonmetals

When looking at the halogens on the periodic table, how does the number of valence electrons change as the energy level is increased?

The total number of valence electrons does not change. It remains at 7.

The total number of valence electrons increases by 1 with each energy level.

The total number of valence electrons does not change. It remains at 1.

The total number of valence electrons decreases by 1 with each energy level.

Which statement about the arrangement of the periodic table is not true?

Rare earth elements are in the first column on the left

Noble gases are in the group farthest to the right

Metals are found on the left side of the periodic table

Transition metals are in the center of the periodic table

Complete the chart below. (0.5 pts each, 8 pts total) Isotopic Symbol: 42K, Atomic #: ___, Mass #: ___, Protons: ___, Neutrons: ___, Electrons: ___, Group Name: ___.

Atomic #: 19, Mass #: 42, Protons: 19, Neutrons: 23, Electrons: 19, Group Name: Alkali Metals.

Atomic #: 20, Mass #: 42, Protons: 20, Neutrons: 22, Electrons: 20, Group Name: Alkaline Earth Metals.

Atomic #: 18, Mass #: 42, Protons: 18, Neutrons: 24, Electrons: 18, Group Name: Noble Gases.

Atomic #: 21, Mass #: 42, Protons: 21, Neutrons: 21, Electrons: 21, Group Name: Transition Metals.

Complete the chart below. (0.5 pts each, 8 pts total) Isotopic Symbol: ___, Atomic #: ___, Mass #: ___, Protons: 3, Neutrons: ___, Electrons: 2, Group Name: ___.

Isotopic Symbol: Li, Atomic #: 3, Mass #: 6, Neutrons: 3, Group Name: Alkali Metals.

Isotopic Symbol: Be, Atomic #: 4, Mass #: 9, Neutrons: 5, Group Name: Alkaline Earth Metals.

Isotopic Symbol: B, Atomic #: 5, Mass #: 11, Neutrons: 6, Group Name: Boron Group.

Isotopic Symbol: He, Atomic #: 2, Mass #: 4, Neutrons: 2, Group Name: Noble Gases.

34. Describe one similarity and one difference between the two atoms you drew above. Include why each difference and similarity is expected, based on each element’s location on the periodic table. (4 pts)

Both atoms are in the same group; one atom is in a different period.

Both atoms have the same number of protons; one atom has more neutrons.

Both atoms have the same number of electrons; one atom has a different atomic mass.

Both atoms have similar chemical properties; one atom has a different number of valence electrons.

Match the following scientists with their appropriate accomplishments.

Arranged the elements on the periodic table based on atomic number

Solid Sphere Model; elements are atoms with different masses

Electron Cloud Model; surrounding the nucleus is an electron cloud made of shells – electrons do not, however, travel in a fixed orbit.

Nuclear Model; Gold Foil experiment allowed him to discover that the nucleus was the positively charged center of the atom surround by negatively charged electrons

Arranged the elements on the periodic table based on atomic mass

An isotope of Carbon has 7 neutrons. Which of the following is true about this isotope? a. Write this isotope’s notation in Nuclear Form. b. Write this isotope’s notation in Hyphen Form. c. Is this the most common form of the isotope? Explain how you know if it is or isn’t.

b. 13C, Carbon-13, No, it is not the most common isotope.

a. 13C, Carbon-13, Yes, it is the most common isotope.

c. 14C, Carbon-14, Yes, it is the most common isotope.

d. 14C, Carbon-14, No, it is not the most common isotope.

This element has 6 energy levels and 8 valence electrons. It must be ________.

noble gas, specifically radon (Rn)

alkali metal, specifically cesium (Cs)

halogen, specifically iodine (I)

alkaline earth metal, specifically barium (Ba)

Which of the following are the three forces that hold the atom together?

Electromagnetic force, strong nuclear force, and weak nuclear force

Gravitational force, electromagnetic force, and weak nuclear force

Gravitational force, strong nuclear force, and electromagnetic force

Strong nuclear force, weak nuclear force, and gravitational force

Atomic Structure Test Honors

11th Grade

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64 Qs

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Practice Problem

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Medium

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NGSS

MS-PS1-1, HS-PS1-8, HS-PS1-1

Standards-aligned

Robert Ott

Used 1+ times

FREE Resource

64 questions

Show all answers

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Atoms of elements in the same group of the periodic table share the same

number of energy levels

number of valence electrons

atomic numbers

atomic masses

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The atomic mass number of magnesium is 24. Therefore its nucleus must contain

12 protons and 12 neutrons

6 protons and 6 electrons

12 neutrons and no protons

12 protons and no electrons

A neutral atom may contain 8 protons, A. 9 neutrons and 10 electrons B. 8 neutrons and 10 electrons C. 9 neutrons and 8 electrons D. 10 neutrons and 9 electrons

9 neutrons and 10 electrons

8 neutrons and 10 electrons

9 neutrons and 8 electrons

10 neutrons and 9 electrons

An element with 5 protons, 6 neutrons, and 8 electrons has an atomic number of A. 5 B. 6 C. 8 D. 11

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An element with 5 protons, 6 neutrons, and 8 electrons has a mass number of A.

DROPDOWN QUESTION

30 sec • 1 pt

The farther an electron is from the nucleus, the more (a) it has.

charge

energy

mass

pull

DRAG AND DROP QUESTION

30 sec • 1 pt

The majority of the mass of the atom is located in the (a) and the majority of the volume of the atom is located in the (b) .

Nucleus, electron cloud

Nucleus, nucleus

Electron cloud, nucleus

Electron cloud, electron cloud

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Atomic Structure Test Honors

64 questions

Atoms of elements in the same group of the periodic table share the same

The atomic mass number of magnesium is 24. Therefore its nucleus must contain

A neutral atom may contain 8 protons, A. 9 neutrons and 10 electrons B. 8 neutrons and 10 electrons C. 9 neutrons and 8 electrons D. 10 neutrons and 9 electrons

An element with 5 protons, 6 neutrons, and 8 electrons has an atomic number of A. 5 B. 6 C. 8 D. 11

An element with 5 protons, 6 neutrons, and 8 electrons has a mass number of A.

The farther an electron is from the nucleus, the more (a) it has.

The majority of the mass of the atom is located in the (a) and the majority of the volume of the atom is located in the (b) .

Atoms of the same element that have different numbers of neutrons are called

The total number of electrons in the outer shell of a sodium atom is

Which particles determine the atomic number of an element?

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