8. How do you determine the number of Neutrons in a nucleus?

Subtract the Mass number and the Atomic Number

Add the Atomic Mass and the Atomic number

It is written on the Periodic Table

16. Which of these best describes an atom?

The smallest particle of an element that shows all the properties of that element.

A particle of matter that carries an overall positive charge.

A particle of matter that is formed by the bonding of two or more molecules.

The smallest particle of an element that can be broken down further to form molecules.

19. Which statement is true about the final atom created? (Select all that apply.)

It has 2 less electrons than the starting atom.

Magnesium (Mg) has formed a +2 cation.

It has 2 more protons than the starting atom.

Magnesium (Mg) has formed a -2 anion.

20. The elements Neon and Argon are not reactive. Which hypothesis best explains this?

They have the maximum possible number of electrons in their outermost shell.

They are not stable atoms, because of this other atoms remain distant.

They are not readily available on Earth.

They tend to give up all their valence electrons easily.

37. Using the picture below, explain why these Carbon (C) atoms are isotopes.

They are carbon atoms that have the same number of protons, a different number of neutrons AND a different mass number

They are carbon atoms that have the same number of protons AND the same number of neutrons.

They are carbon atoms that ONLY have the same number of protons but differ in the number of neutrons.

They are carbon atoms that ONLY have the same number of protons but have different mass numbers.

***Many people believe that the atomic number of the atom is the number of electrons in the atom. Describe when this is the case.

When the atom is neutral and the number of electrons and the number of protons are equal.

As the atom absorbs photons the electrons excite and produce unique emission spectrum.

Through radioactive decay the electrons and neutrons form unique atomic number isotopes.

Whether the atom is neutral or charged the number of electrons is always a unique identifier.

**What can be concluded about the atom from knowing that oxygen-18 has an atomic number of 8?

This oxygen isotope contains 8 electrons, 8 protons, and 10 neutrons.

An oxygen atom that includes 8 baryons, 9 prions, and 10 neutrons.

It's an oxygen allotrope incorporates 7 electrons, 7 protons, and 7 quarks.

The oxygen configuration consists of 6 electrons, 8 photons, and 10 neutrons.

***What conclusions can be drawn about the existence of nitrogen-14 and nitrogen-15?

They are isotopes of nitrogen and they contain the same number of protons and electrons but each contains a different number of neutrons - 7 and 8 respectively.

They are the same form of nitrogen and they include the same number of electrons and neutrons but each contains a different number of protons - 7 and 8 respectively.

They are several allotropes of nitrogen and they accommodate the same number of neutrons but each contains a different numbers of protons and electrons - 7 and 8 respectively.

They are different configurations of nitrogen and they consist of the same number of protons and neutrons but each contains a different number of electrons - 7 and 8 respectively.

**Consider the elements in the periodic table. As we move to the far right, the last column is made up of _________ that are __________.

noble gases; stable/nonreactive

noble gases; unstable/highly reactive

Atoms and the Periodic Table

Authored by Shanna Williams

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11th Grade

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MULTIPLE CHOICE QUESTION

30 sec • 2 pts

1. Which subatomic particle can NOT be changed?

Nucleus

Proton

Neutron

Electron

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

2. Where are electrons likely to be found?

Nucleus

Electron Clouds

Mixed Throughout an Atom

In the neutrons of an atom

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

3. Which of the following has the least mass?

Nucleus

Proton

Neutron

Electron

MULTIPLE CHOICE QUESTION

30 sec • 3 pts

4. Which elements share similar chemical properties? (Check their location on the periodic table.)

O and Al

Mg and K

K and Na

Na and Ne

MULTIPLE CHOICE QUESTION

30 sec • 3 pts

5. An atom of Carbon has 6 protons, 6 electrons, and 6 neutrons. What is the mass number of that atom of Carbon?

MULTIPLE SELECT QUESTION

30 sec • 3 pts

6. Which two statements about isotopes are true?

They have the same number of protons

They have the same number of neutrons

They have a different atomic number

They have a different atomic mass

MULTIPLE CHOICE QUESTION

30 sec • 2 pts

7. What is a vertical column on the Periodic Table referred to as?

Period

Group/Family

Element

Property

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Atoms and the Periodic Table

1. Which subatomic particle can NOT be changed?

2. Where are electrons likely to be found?

3. Which of the following has the least mass?

4. Which elements share similar chemical properties? (Check their location on the periodic table.)

5. An atom of Carbon has 6 protons, 6 electrons, and 6 neutrons. What is the mass number of that atom of Carbon?

6. Which two statements about isotopes are true?

7. What is a vertical column on the Periodic Table referred to as?

8. How do you determine the number of Neutrons in a nucleus?

9. Which atom has a full outer energy level? (Check the Periodic Table for grouping.)

10. What are the left-to-right rows on the periodic table?

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