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L2: Understanding Atomic Structure and Bonding

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

The ________in an atom don't stay still; they exist in orbitals where there's a 90% probability of finding them. It's like trying to track the wings of a hummingbird!

a)

Proton

b)

Neuron

c)

Electron

d)

Isotope

2.

Carbon can "shape-shift" its orbitals to form single, double, or triple bonds. This is called ________ and is why carbon forms such a wide variety of molecules.

a)

excitation

b)

hybridization

c)

degenerate

d)

trivalent

3.

When atoms bond, it's like waves colliding. If they sync up, they bond; if not, they repel. _______interference strengthens the bond, while destructive interference prevents bonding.

a)

None

b)

Destructive

c)

Constructive

d)

Node

4.

Electrons can occupy molecular orbitals that span across multiple atoms, creating______. This concept helps explain why some materials are stronger or more flexible.

a)

bonds

b)

electricity

c)

sparks

d)

wave

5.

When atoms bond, they create sigma (σ) and pi (π) bonds, each with distinct structures. ______ bonds are stronger and form the backbone of molecules, while ______bonds add flexibility.

a)

Pi, sigma

b)

Sigma, sigma

c)

Sigma, pi

d)

Pi, pi

6.

Methane (CH₄) has ______hybridized carbon, which gives it a tetrahedral shape. This symmetry makes it highly stable as a natural gas for cooking and heating.

a)

sp

b)

sp2

c)

sp³

d)

s

7.

Ethene (C₂H₄), used to ripen fruits, has ______ hybridized carbons, which allows for the double bond between carbons.

a)

sp

b)

sp²

c)

sp³

d)

p

8.

Acetylene (C₂H₂), used in welding, has a triple bond between two carbons due to _______ hybridization. This bond is super strong and releases a lot of energy when broken.

a)

sp

b)

sp²

c)

sp³

d)

s

9.

Molecules arrange themselves to minimize electron repulsion. This is why water (H₂O) has a ______shape instead of a straight line.

a)

tetrahedral

b)

trigonal planar

c)

bent

d)

linear

10.

Did You Know? Methane (CH₄) is _________due to sp³ hybridization and the VSEPR theory. This shape makes methane stable and non-reactive under normal conditions.

a)

tetrahedral

b)

bent

c)

trigonal planar

d)

linear

11.

__________patterns, like in molecular bonding, also create the colors in butterfly wings. These colors result from how light waves interact.

a)

Node

b)

Destructive

c)

Interference

d)

Diffraction

12.

_______bonds in molecules overlap along the axis between two nuclei, creating a strong connection that resists twisting.

a)

Interference

b)

Pi

c)

Sigma

d)

Destructive

13.

Molecular orbitals explain why some chemicals can absorb ______ light. Sunscreen works by using molecules that absorb ________, protecting your skin from harmful rays.

a)

blue

b)

red

c)

UV

d)

green

14.

_________compounds like benzene have resonance structures that make them stable. These structures are used in materials like nylon and plastics.

a)

Non-aromatic

b)

Aromatic

c)

Ionic

d)

Antiaromatic

15.

The _______ hybridization in molecules like benzene creates a ring structure that's exceptionally stable, explaining its presence in many perfumes and medicines.

a)

sp

b)

sp²

c)

sp³

d)

s