Final Quiz - Atomic Structure And Chemical Bonding

15 Questions | By Superoxideion01 | Last updated: Jan 31, 2013 | Total Attempts: 3353

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A 15-question quiz on Atomic Structure and Chemical Bonding on www. Thechemwhiz. Piczo. Com. You'll need a calculator of some sort. Good luck.

Questions and Answers

1.

This type of bond is brittle, and only conducts electricity when dissolved. Which bond is it?
- A.
  
  Metallic Bonding
- B.
  
  Ionic Bonding
- C.
  
  Covalent Bonding
2.

Element N has four isotopes. N-19, N-20, N-21, and N-22. Out of 100 atoms of the element N, 20 are N-19. 9 are N-20 52 are N-21 19 are N-22 Calculate the relative atomic mass of N.

Discuss
3.

Silicon has a proton number of 14. State it's electron configuration.
4.

What property do metals have that allow them to be hit or shaped without breaking?
- A.
  
  Conductivity
- B.
  
  Density
- C.
  
  Mobility
- D.
  
  Malleability
5.

Vanadium is more reactive than Strontium.
- A.
  
  True
- B.
  
  False
6.

Beryllium has a charge of +2. Fluorine has a charge of -1. What's the chemical formula?
- A.
  
  Be2F2
- B.
  
  Be4F8
- C.
  
  BeF2
- D.
  
  Be2F
7.

Which group of the periodic table has elements which are extremely reactive and silvery soft?
- A.
  
  Alkali Metals
- B.
  
  Noble Gases
- C.
  
  Alkali Earth Metals
- D.
  
  Transition Metals
8.

Which property of an element does an isotope change?
- A.
  
  Reaction rates
- B.
  
  Malleability
- C.
  
  Melting point
- D.
  
  Shininess
9.

The chemical Formaldehyde has a chemical formula of CH2O. The carbon atom needs and can share 4 electrons. The oxygen atom needs and can share 2 electrons. The hydrogen atoms need and can share 1 electron. State the structure that is true for this bond.
- A.
  
  The oxygen atom has a single bond with the Carbon atom, and the hydrogen atoms have a double bond with the Carbon atom.
- B.
  
  The Hydrogen atoms each have a double bond with the Oxygen atom, and the Oxygen atom has a single bond with the Carbon atom.
- C.
  
  The carbon bond has a single bond with both hydrogen atoms, and a double bond with the oxygen atom.
- D.
  
  The Carbon atom has a single bond with the Oxygen atom, and the Hydrogen atoms have a single bond with the Oxygen atom.
10.

The electron configuration for the element in Group 13/Group 3, period 3 is 2,8,3.
- A.
  
  True
- B.
  
  False
11.

Metallic bonds are generally stronger when...
- A.
  
  There are more electrons in the sea of electrons.
- B.
  
  There are more neutrons.
- C.
  
  There are less electrons in the sea of electrons.
- D.
  
  The metal can conduct electricity.
12.

Element X has 2 electron shells. The outer shell has 6 electrons. It is a nonmetal. Which element is Element X?
- A.
  
  Fluorine
- B.
  
  Chlorine
- C.
  
  Carbon
- D.
  
  Oxygen
13.

Beryllium (Be) has a charge of +2. Nitrogen (N) has a charge of -3. What's the chemical formula?
- A.
  
  Be6N4
- B.
  
  Be3N2
- C.
  
  Be2N
14.

Uranium has three isotopes. 0.005% is Uranium-234. 0.720% is Uranium-235. 99.275% is Uranium-238. Give the approximate relative atomic mass of Uranium, to four decimal places.
15.

For a nice and easy final question, Which bond has the highest melting points?
- A.
  
  Covalent
- B.
  
  Ionic
- C.
  
  Metallic