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Unit 2 Test Review
Test Description: Complete after your study guide.
Instructions: Answer all questions to get your test result.
1) Which of the following contains only monoatomic elements?
A
C. Ar, C, Co, Be
B
B. HNO3, Ne, Pt, CH4
C
A. He, CO2, CH4, HNO3
D
D. HNO3, CO2, H2O, H2SO4
2) Baking soda is used to make cookies. The chemical formula for baking soda is NaHCO3. Which term describes baking soda?
A
Monatomic element
B
Compound/Molecule
C
Mixture
D
Solution
3) Which option contains only compounds?
A
A. Au, Ni, Cu, Fe
B
C. H2O, H2O2, H3, CO2
C
B. NH3, KNO3, Hg, Ne
D
D. Na, NaCl, Pb, C6H12O6
4) How are the elements in the periodic table arranged?
A
D. By their atomic number
B
C. By their chemical name
C
A. Alphabetically
D
B. By their chemical symbol
5) Sulfuric acid (H2SO4) is not found on the Periodic Table of Elements because sulfuric acid is
A
D. A compound
B
B. An element
C
A. An atom
D
C. A mixture
6) The zig-zag line on the periodic table separates the
A
D. Noble gases from the halogens
B
A. Transition metals from the noble gases
C
B. Metals and non-metals
D
C. Alkali metals from the alkaline earth metals
7) A student observes a model of 2 bonded atoms. She is told the atoms are both nonmetals. What kind of bond are the atoms creating?
A
D. A salty bond
B
B. An ionic bond
C
A. A covalent molecular bond
D
C. An acidic bond
8) Which of the following is true?
A
A. Periods form horizontal rows and groups form vertical columns
B
B. Groups for horizontal rows and periods form vertical columns
C
C. Categories form horizontal rows, gases form vertical columns
D
D. Gases form horizontal rows, categories form vertical columns
9) A trumpet is a musical instrument made of brass. Brass is made when copper and zinc metals come together without a chemical reaction occuring. Which statement is the best description of brass?
A
Brass is an element
B
Brass is a compound
C
Brass is a mixture
D
Brass is a molecule
10) 3. In what order are the regions arranged on the periodic table, reading left to right?
A
D. nonmetals, metalloids, metals
B
A. metals, metalloids, nonmetals
C
C. metals, nonmetals, metalloids
D
B. metalloids, metals, nonmetals
*select an answer for all questions
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