This work was created by Dr Jamie Love and licensed under a Creative Commons Attribution-ShareAlike 4.0 International License Creative Commons Licence.

EARTH
Self Evaluation Test

You probably know the "routine" by now. Choose the best answer by selecting one of the buttons.
When you choose an answer you will get a "pop-up" response indicating whether you got it right or wrong. I suggest that the first time you take the test, you simply stick with your original answers, complete the test and submit it for a grade. This will give you an idea of what you have learned so far and is more like a "regular" test (whatever that is). Your answers will be graded and each one will be scored Correct or Wrong. Once you have the score and the list of incorrect answers you can use your "Back Button" to return to your exam and correct your errors. This time, this second time, you can carefully read each response, learn from it and choose the right answer. Students receiving a perfect score will be awarded a Certificate of Completion.
Important note : on some browsers (like some Internet Explorers) when you use the page down button to scroll down you will end up shifting your checked answer to the next one down the line! If that happens to you, use your mouse to scroll - not the keyboard.


Here's a small Periodic Table of the Typical Elements to help you answer this question.

EARTH 1 : What is another name for the Group I elements?

Alkaline Metals.
Alkali Metals.
Halides.
Noble Elements.

Here's a small Periodic Table of the Typical Elements to help you answer this question.

EARTH 2 : How many electrons are in their outer shell of the Group II elements?

One.
Two.
Four.
Eight.

Here's a small Periodic Table of the Typical Elements to help you answer this question.

EARTH 3 : From the list below, choose the most likely bond(s), kind and number, for Group I elements.

One covalent bond.
Two covalent bonds.
One ionic (electrovalent) bond.
They do not form bonds.

Here's a small Periodic Table of the Typical Elements to help you answer this question.

EARTH 4 : From the list below, choose the most likely bond(s), kind and number, for Group VII elements.

One covalent bond.
Two ionic (electrovalent) bonds.
One ionic (electrovalent) bond.
They do not form bonds.

Here's a small Periodic Table of the Typical Elements to help you answer this question.

EARTH 5 : From the list below, choose the most likely bond(s), kind and number, for Group V elements.

Three covalent bonds.
Four covalent bonds.
Five covalent bonds.
They do not form covalent bonds.

Here's a small Periodic Table of the Typical Elements to help you answer this question.

EARTH 6 : From the list below, choose the most likely bond(s), kind and number, for Group VIII elements.

A variety of covalent bonds.
One ionic (electrovalent) bond.
A variety of noble bonds.
They do not form bonds.

Here's a small Periodic Table of the Typical Elements to help you answer this question.

EARTH 7 : Use the Table to help you tell me which of these atoms is larger, carbon (C) or nitrogen (N).

Carbon (C).
Nitrogen (N).
They are both the same size.
It is impossible to tell from this Table.

Here's a small Periodic Table of the Typical Elements to help you answer this question.

EARTH 8 : Use the Table to help you tell me which of these atoms is larger, oxygen (O) or sulfur (S).

Oxygen (O).
Sulfur (S).
They are both the same size.
It is impossible to tell from this Table.

Here's a small Periodic Table of the Typical Elements to help you answer this question.

EARTH 9 : Use the Table to help you tell me which of these atoms is larger, argon (Ar) or potassium (K) .

Argon (Ar).
Potassium (K).
They are both the same size.
It is impossible to tell from this Table.

Here's a small Periodic Table of the Typical Elements to help you answer this question.

EARTH 10 : Which of these is larger, an atom of neon (Ne) or an anion of fluorine (Fl-)? Hint : think about how that extra electron will affect the fluoride ion’s shell.

Neon (Ne).
The fluoride anion (F-)
They are both the same size.
It is impossible to predict.

Here's a small Periodic Table of the Typical Elements to help you answer this question.

EARTH 11: Which of these is larger – an atom of neon (Ne) or a cation of sodium (Na+).

Warning - this is not easy. Use what you learned in the previous question to help you think about how the charge from the nucleus affects electron shells.
Neon (Ne).
The cation of sodium (Na+).
They are both the same size.
It is impossible to tell.

Here's a portion of the Table showing the first and second ionization energies (in electron volts, eVs). Use it to answer the following question.

EARTH 12 : How many eVs are needed to turn barium (Ba) into an ion (Ba+)?

4.79 eV
9.32 eV
5.21 eV
10.0 eV

Here's a portion of the Table showing the first and second ionization energies (in electron volts, eVs). Use it to answer the following question.

EARTH 13 : How many atoms of sodium (Na) can be ionized into Na+ with 20 eVs?

None.
One.
Two.
Three.

Here's a portion of the Table showing the first and second ionization energies (in electron volts, eVs). Use it to answer the following question.

EARTH 14: How many eVs are needed to remove the TWO outer electrons from barium (Ba) to make Ba+2?

5.21 eV
10.42 eV
15.21 eV
20.00 eV

The Table below shows the electronegativities of the Typical Elements. Use it to answer the following question.

EARTH 15 : What will probably happen when sodium (Na) and chlorine (Cl) atoms are mixed together?

Nothing. They are on opposite sides of the Table and have very different electronegativities so they will not get along.
They will form a molecule of NaCl using a metallic bond.
They will form a molecule of NaCl using an ionic (or electrovalent) bond.
They will form a molecule of NaCl using a covalent bond.

The Table below shows the electronegativities of the Typical Elements. Use it to answer the following question.

EARTH 16 : What kinds of bonds are formed between oxygen (O) and carbon (C) atoms and why?

No bonds will for because their electronegativities are so similar.
Ionic (or electrovalent) bonds will form.
Covalent bonds will form but they will be slightly polarized.
Covalent bonds will form and they will not be polarized.

EARTH 17 : Graphite, diamonds and fullerenes are ________________ of carbon.

allotropes
isotopes
metalloids
compounds

Here's a small Periodic Table of the Typical Elements to help you answer this question.

EARTH 18 : Which of the electron configurations, below, describes the outer electron shell of the Group VI elements?

s2, p2
s2, p4
s4, p2
s2, p2, d2

Here's a small Periodic Table of the Typical Elements to help you answer this question.

EARTH 19 : Argon's 18 electrons are distributed as 1s2, 2s2, 2p6, 3s2, 3p6. Use that information and this Table to help you determine which electron distribution (below) is a short cut way of describing the electron distribution of calcium (Ca).

[Ar] 4s2
[Ar] 3s2
[Ar] 3d2
[Ar] 4f2

Below is a big view Periodic Table of the Typical Elements to help you answer this question.

EARTH 20 : Argon's 18 electrons are distributed as 1s2, 2s2, 2p6, 3s2, 3p6. Use that information and this Table to determine which electron distribution (below) is a short cut way of describing the electron distribution of nickel (Ni) - the tenth element in the 4th Period.

This is a difficult question so give it a lot of thought.
[Ar] 4s2, 4p6, 5s2
[Ar] 4s2, 4p8
[Ar] 4s2, 3d8
[Ar] 3d10


You can now submit your exam to Merlin for grading. If your answers were less than perfect you will receive a score and a list of Incorrect (and Correct) replies. Then you can use your "Back Button" to return to this page and correct your earlier errors. Once you have corrected all your earlier errors (by rechoosing a correct answer when you were told you are wrong), you will get a perfect score.


This work was created by Dr Jamie Love and licensed under a Creative Commons Attribution-ShareAlike 4.0 International License Creative Commons Licence.