What Makes One Odor Different From Another

What is the primary factor that determines the difference in odors between two substances?

• Molecular structure

• Color

• Density

• Boiling point

Tags

NGSS.MS-PS1-1

Which part of the human body is primarily responsible for detecting odors?

• Eyes

• Ears

• Nose

• Skin

Tags

NGSS.MS-LS1-8

What type of chemical bond is most influential in determining the odor of a molecule?

• Ionic bond

• Covalent bond

• Hydrogen bond

• Metallic bond

Which of the following is a common method used to analyze the components of a fragrance?

• Chromatography

• Electrolysis

• Distillation

• Fermentation

What is the role of olfactory receptors in the perception of smell?

• They amplify sound waves

• They detect light

• They bind to odor molecules

• They produce hormones

How does temperature affect the volatility of a substance and its odor?

• Higher temperature decreases volatility

• Higher temperature increases volatility

• Temperature has no effect

• Volatility is only affected by pressure

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which of the following molecules is likely to have a strong odor?

What is the term for a substance that can trigger a smell response in the olfactory system?

• Pheromone

• Aroma compound

• Enzyme

• Catalyst

Which scientific principle explains why some odors are more intense than others?

• Concentration gradient

• Diffusion rate

• Molecular weight

• Osmosis

What is the effect of molecular size on the perception of odor?

• Larger molecules are always more odorous

• Smaller molecules are always more odorous

• Molecular size has no effect

• Both large and small molecules can be odorous