Inter and Intramolecular forces

Inter and Intramolecular forces

Assessment

Flashcard

Science

10th Grade

Easy

TX.112.43.C.7.A.

Standards-aligned

Created by

Yamini Mital

Used 1+ times

FREE Resource

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35 questions

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1.

FLASHCARD QUESTION

Front

Which of the following has hydrogen bonding? Options: CBr4, NO2, H2S, NH3

Back

NH3

Answer explanation

Hydrogen bonding occurs when hydrogen is bonded to N, O, or F. Among the options, NH3 (ammonia) has hydrogen bonded to nitrogen, allowing for hydrogen bonding. CBr4, NO2, and H2S do not exhibit this type of bonding.

2.

FLASHCARD QUESTION

Front

Rank these in order of strength of the attraction: covalent bond, hydrogen bond, dipole-dipole attraction.

Back

covalent bond > hydrogen bond > dipole-dipole

Answer explanation

Covalent bonds are the strongest due to shared electrons, followed by hydrogen bonds which are weaker attractions between polar molecules. Dipole-dipole attractions are the weakest, occurring between molecules with permanent dipoles.

3.

FLASHCARD QUESTION

Front

Type of intermolecular force responsible for the attraction pictured above.

Back

Hydrogen Bonds

Answer explanation

Hydrogen bonds are a specific type of dipole-dipole interaction that occur when hydrogen is bonded to highly electronegative atoms like oxygen or nitrogen, leading to strong attractions between molecules.

4.

FLASHCARD QUESTION

Front

Intermolecular forces are attractions between ______.

Back

Neighboring molecules

Answer explanation

Intermolecular forces are attractions between neighboring molecules, which allow them to interact and influence each other's properties. This distinguishes them from forces within a molecule or between charged particles.

5.

FLASHCARD QUESTION

Front

What kind of force is the arrow pointing to?

Back

Intermolecular Force

Answer explanation

The arrow points to an Intermolecular Force, which is the attraction between molecules. Intramolecular Forces occur within a molecule, while Intermolecular Forces are responsible for interactions between different molecules.

6.

FLASHCARD QUESTION

Front

Does CH4 have hydrogen bonding? Note, the electronegativity of H is 2.1 and C is 2.5.

Back

no

Answer explanation

CH4 (methane) does not exhibit hydrogen bonding because the electronegativity difference between C (2.5) and H (2.1) is too small to create the strong dipole necessary for hydrogen bonds. Therefore, the answer is no.

7.

FLASHCARD QUESTION

Front

In CF4, which charge will the Fluorine atoms tend to have given that fluorine has an electronegativity of 3.0 and carbon has an electronegativity of 2.5?

Back

slight negative

Answer explanation

In CF4, fluorine (3.0) is more electronegative than carbon (2.5), leading to an uneven sharing of electrons. This results in fluorine atoms acquiring a slight negative charge due to their stronger attraction for the bonding electrons.

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