Lab Techniques
What is the method that separates a solid from a liquid using a porous barrier?
A) Decanting
B) Extraction
C) Filtration
D) Evaporation
C) Filtration
What part of a hydrocarbon reacts with H₂ in a hydrogenation reaction?
A) Single bond
B) Benzene ring
C) Triple bond
D) Carbonyl group
C) Triple Bond
What reaction produces CO₂, H₂O, and energy from a hydrocarbon and O₂?
A) Oxidation
B) Combustion
C) Reduction
D) Dehydration
B) Combustion
Which of the following is a monosaccharide?
A) Sucrose
B) Glucose
C) Lactose
D) Starch
B) Glucose
What is the correct formula for density?
A) Mass × Volume
B) Volume / Mass
C) Mass / Volume
D) Mass + Volume
C) Mass / Volume
What is the hottest and most efficient flame produced by a Bunsen burner?
A) Yellow flame
B) Orange flame
C) Blue flame
D) Green flame
C) Blue Flame
Which type of alcohol cannot be oxidized?
A) Primary
B) Secondary
C) Tertiary
D) All can be oxidized
C) Tertiary Alcohol
What reaction adds water to an alkene to form an alcohol?
A) Hydrolysis
B) Dehydration
C) Hydration
D) Condensation
What type of carbohydrate forms when two monosaccharides bond?
A) Monosaccharide
B) Disaccharide
C) Polysaccharide
D) Oligosaccharide
B) Disaccharide
What term describes all known digits plus one estimated digit?
A) Rounding digits
B) Placeholders
C) Significant figures
D) Decimals
C) Significant Figures
What lab equipment is best used for precise liquid volume measurements?
A) Beaker
B) Erlenmeyer flask
C) Graduated cylinder
D) Watch glass
C) Graduated Cylinder
Which compound contains a carbonyl group bonded to two carbon atoms?
A) Alcohol
B) Ether
C) Ketone
D) Alkane
C) Ketone
What reaction converts a primary alcohol into an aldehyde or acid?
A) Reduction
B) Condensation
C) Oxidation
D) Neutralization
C) Oxidation
What are mirror-image isomers called?
A) Structural isomers
B) Enantiomers
C) Diastereomers
D) Tautomers
B) Enantiomers
What type of change produces a new substance?
A) Physical change
B) State change
C) Chemical change
D) Mixture separation
C) Chemical Change
What technique involves carefully pouring a liquid to separate it from settled solids?
A) Centrifuging
B) Filtration
C) Extraction
D) Decanting
D) Decanting
What functional group is found in aldehydes?
A) -COOH
B) -OH
C) -COO-
D) -CHO
D) -CHO
What type of reaction turns ketones into secondary alcohols?
A) Oxidation
B) Hydrolysis
C) Reduction
D) Combustion
C) Reduction
What structure shows carbohydrates in a ring with alpha/beta labels?
A) Fischer projection
B) Chair conformation
C) Haworth projection
D) Newman projection
C) Haworth Project
What kind of mixture has the same composition throughout?
A) Heterogeneous
B) Homogeneous
C) Pure substance
D) Compound
B) Homogeneous
What separation method uses a solid turning directly into a gas?
A) Distillation
B) Sublimation
C) Crystallization
D) Centrifuging
B) Sublimation
What aromatic compound has an -OH group directly on a benzene ring?
A) Aniline
B) Toluene
C) Benzaldehyde
D) Phenol
D) Phenol
What happens when you try to hydrogenate a benzene ring under normal conditions?
A) It becomes an alkane
B) It breaks into smaller alkanes
C) It reacts violently
D) No reaction occurs
D) No reaction occurs
What is the storage form of glucose in animals?
A) Cellulose
B) Starch
C) Glycogen
D) Sucrose
C) Glycogen
What chart organizes elements by atomic number?
A) Element List
B) Mendeleev Chart
C) Atomic Registry
D) Periodic Table
D) Periodic Table