Unit 7 - Covalent Bonding Test Review
Authored by Lynne Cohen
Chemistry
10th - 12th Grade
NGSS covered
Used 80+ times
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About
This quiz focuses on chemical bonding, specifically covalent bonding theory and molecular geometry, appropriate for high school chemistry students in grades 10-12. The questions assess students' understanding of fundamental bonding concepts including the distinction between ionic and covalent bonds, electronegativity and bond polarity, Lewis structures, VSEPR theory for molecular geometry prediction, and exceptions to the octet rule. Students need to master several interconnected concepts to succeed: recognizing that covalent bonds form through electron sharing between nonmetals while ionic bonds involve electron transfer between metals and nonmetals, understanding how electronegativity differences determine bond polarity, applying the octet rule and its exceptions (particularly for hydrogen and expanded octets), drawing Lewis structures to predict bonding patterns in diatomic and polyatomic molecules, using VSEPR theory to determine molecular shapes, and connecting molecular geometry to overall molecular polarity. The quiz requires both conceptual understanding and application skills, as students must analyze chemical formulas, predict bond types, determine molecular shapes, and apply naming conventions for covalent compounds. Created by Lynne Cohen, a Chemistry teacher in the US who teaches grades 10 and 12. This comprehensive review quiz serves as an excellent tool for reinforcing Unit 7 concepts before summative assessment, making it ideal for structured review sessions, homework assignments, or formative assessment to identify areas where students need additional support. Teachers can use this quiz as a warmup activity to activate prior knowledge, assign it as independent practice to reinforce classroom instruction, or implement it as a low-stakes assessment to gauge student readiness for the unit test. The variety of question types allows educators to differentiate instruction by focusing on specific concepts where individual students struggle, while the progressive difficulty helps build confidence as students work from basic bonding concepts to more complex molecular geometry applications. This assessment aligns with NGSS HS-PS1-3 (planning and conducting investigations to gather evidence about chemical bonding) and supports Common Core mathematical practices through systematic problem-solving approaches required for Lewis structures and VSEPR predictions.
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25 questions
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1.
MULTIPLE CHOICE QUESTION
20 sec • 1 pt
How are atoms held together in covalent bonds?
By gaining and losing electrons
By sharing electrons
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following has the highest melting point as a result of being an ionic compound?
O2
F2
Na2O
CCl4
Tags
NGSS.HS-PS1-3
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Ethane is C2H6; it is made entirely of C-C and C-H bonds. What type of bonding is present in this molecule?
Ionic
Polar Covalent
Non-polar covalent
Metallic
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What types of elements combine to form ionic bonds?
Metals and metalloids
Metals and non metals
Non metals only
Metalloids only
Metals only
5.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
When diatomic fluorine creates a molecule, what type of bond is used? (Hint, you may have to draw the Lewis structure)
Single bond
Double bond
Triple bond
Tags
NGSS.HS-PS1-1
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What are atoms used to complete an octet but not used in bonding called?
Shared pair
Lone pair
Bonded pair
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Which of the following is NOT one of the seven diatomic molecules?
Hydrogen
Carbon
Bromine
Iodine
Oxygen
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