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1. A diagram of the periodic table of the elements is shown below.
[pic]
In which region of the table would nonmetals be found?
A 1 B 2 C 3 D 4
Justification: _______________________________________________________________________
__________________________________________________________________________________
2. In a comparison of metals to nonmetals, metals tend to have --
A lower melting points and greater conductivity than nonmetals.
B lower conductivity and lower density than nonmetals.
C higher density and lower melting points than nonmetals.
D greater conductivity and higher melting points than nonmetals.
Justification: _______________________________________________________________________
__________________________________________________________________________________
3. Group 18 has which of the following properties?
1) all the elements are noble gases
2) all the elements have a "full" outer shell of electrons
3) all the elements easily form compounds with other elements
4) all the elements have 2 electrons in their first shell
A) 1,2 and 4 B) 2 and 4 C) 3 and 4 D) 2,3 and 4 E) 1,2,3 and 4
Justification: _______________________________________________________________________
__________________________________________________________________________________
4. Ionic and covalent compounds are alike in that they both —
A form ions. B share electrons. C lose outer electrons. D fill outer electron levels.
Justification: _______________________________________________________________________
__________________________________________________________________________________
5. What are valence electrons? Where are they located? How many valence electrons do the groups/families have?
6. A diagram of a lithium atom and a fluorine atom is shown below.
When lithium reacts chemically with fluorine, the outermost electron of lithium will transfer to which numbered area in the diagram?
A. 1 B. 2 C. 3 D. 4
Justification: _______________________________________________________________________
__________________________________________________________________________________
7. Leroy combines magnesium (Mg) and fluorine (F).
Based on the periodic table, which statement describes the interaction of these two elements?
A. Mg is a metal and F is a nonmetal that forms an ionic bond.
B. Mg is a nonmetal and F is a metal that forms an ionic bond.
C. Mg is a metal and F is a metal that forms a covalent bond.
D. Mg is a metalloid and F is a nonmetal that forms a covalent bond.
Justification: _______________________________________________________________________
__________________________________________________________________________________
8. How many bonds will form when magnesium and sulfur combine?
[pic] [pic]
A. 1 B. 2 C. 3 D. 4
Justification: _______________________________________________________________________
__________________________________________________________________________________
9. Christy is studying sodium in the following periodic table of elements.
[pic]
She makes the following list of possible properties for sodium:
• Symbol is Na • Is a transition metal
• Atomic number is 11 • Has one valence electron
Which of these should Christy remove from this list?
A. Symbol is Na B. Is a transition metal C. Atomic number is 11 D. Has one valence electron
Justification: _______________________________________________________________________
__________________________________________________________________________________
10. The diagram shows a model of a methane molecule, which has the formula CH4. Which phrase correctly describes the relationship of the carbon and hydrogen atoms in a methane molecule?
A. They are held together by ionic bonds.
B. They share electrons to form covalent bonds.
C. They bond to each other since all nuclei are positively charged.
D. They are attracted to each other since the nucleus of each atom contains neutrons.
Justification: _____________________________________________
________________________________________________________
11. A model of two atoms is shown. Which of the following would result if a covalent bond is formed between the two atoms?
A. Atom 1 would transfer two protons to atom 2.
B. Atom 2 would transfer four neutrons to atom 1.
C. Each atom would share two of its electrons with the other atom.
D. Each atom would share four of its electrons with the other atom.
Justification: _______________________________________________________________________
__________________________________________________________________________________
12. How many bonds will form when sodium bonds with chlorine? What type of bond is formed?
Explanation: __________________________________________________________________________
_____________________________________________________________________________________
13. Sara wants to know if lithium (Li) and bromine (Br) will bond. She uses the following table to find the properties of the two elements.
[pic]
Which statement describes the type of bond formed from these two elements?
Based on the periodic table, which statement describes the interaction of these two elements?
A. Li is a metalloid and Br is a nonmetal that forms a covalent bond.
B. Li is a metal and Br is a metal that forms a covalent bond.
C. Li is a nonmetal and Br is a metal that forms an ionic bond.
D. Li is a metal and Br is a nonmetal that forms an ionic bond.
Justification: _______________________________________________________________________
__________________________________________________________________________________
14. Create Lewis structures for elements hydrogen and nitrogen. How many bonds will occur when hydrogen bonds with nitrogen? What type of bond will occur?
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