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Twelfth Grade (Grade 12) Chemistry Questions

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Grade 12 Chemistry
A mole of table sugar and a mole of Vitamin C have equal
  1. masses.
  2. volumes.
  3. numbers of atoms.
  4. numbers of molecules.
Grade 12 Periodic Table and Elements
Which of the following parameters governs the physical and chemical properties of elements?
  1. Atomic number
  2. Atomic weight
  3. Mass number
  4. Atomic radius
Grade 12 Macromolecules
Which of these describes a substrate?
  1. part of the enzyme that substrate molecules fit into
  2. molecule that the enzyme works on
  3. what the enzyme helps produce from the reaction
Grade 12 Chemistry
What is the mass of 8.70 moles of carbon?
  1. 12.0 g
  2. 104 g
  3. 244 g
  4. 0.988 g
Grade 12 Thermodynamics
Which of the following factors does not affect the heat of reaction?
  1. Physical state
  2. Pressure
  3. Temperature
  4. Volume
Grade 12 Macromolecules
A polysaccharide that can be made in some animal cells is
  1. starch.
  2. pectin.
  3. glycogen.
  4. cellulose.
Grade 12 Bonds and Mixing
The sugar used in a crystal-making experiment is a(n)                .
  1. solute
  2. solvent
  3. supersaturate
  4. atom
Grade 12 Macromolecules
Which type of biomolecule does not form polymers?
  1. lipids
  2. proteins
  3. carbohydrates
  4. nucleic acids
Grade 12 Macromolecules
What speeds up chemical reactions?
  1. enzymes
  2. pH
  3. biochemical reactions
  4. activation energy
Grade 12 Macromolecules
Which molecule is most likely an enzyme?
  1. maltose
  2. sucrose
  3. lipase
  4. taurine
Grade 12 Acids and Bases
In volumetric analysis, the auxiliary reagent is known as the                  .
  1. indicator
  2. standard solution
  3. titrant
  4. titrate
Grade 12 Biochemical Pathways
Which process requires an input of energy?
  1. exergonic reactions
  2. endergonic reactions
  3. hydrolysis
  4. cellular respiration
Grade 12 Bonds and Mixing
In a crystal-making experiment, the water is the                .
  1. solute
  2. solvent
  3. supersaturate
  4. mixture
Grade 12 Macromolecules
Which type of molecule is most likely to have this functional group?
Structural Formula - Carboxyl
  1. steroid
  2. carbohydrate
  3. amino acid
  4. alcohol
Grade 12 Biochemical Pathways
Which statement is a true distinction between cellular respiration and fermentation?
  1. NADH is oxidized by the electron transport chain in cellular respiration only.
  2. Fermentation is an example of an endergonic reaction, while cellular respiration is an exergonic reaction.
  3. Substrate-level phosphorylation is unique to fermentation only.
  4. Fermentation is the metabolic pathway of prokaryotes, whereas cellular respiration is used only by eukaryotes.
Grade 12 Macromolecules
ATP, the energy molecule of the cell, is known to perform phosphorylation on many different molecules. What does this mean?
  1. ATP can receive many different phosphate groups.
  2. ATP can convert molecules into nucleic acids.
  3. ATP can donate phosphate groups to other molecules.
  4. ATP can release a large amount of energy when hydrolyzed.
Grade 12 Biochemical Pathways
A plant makes food through photosynthesis and is then eaten by a deer. The deer uses the sugars from the plant to make energy for itself when it runs away from a wolf. Which pathway represents how energy is transformed in this scenario?
  1. light --> chemical --> mechanical
  2. chemical --> kinetic --> heat
  3. heat --> potential --> chemical
  4. mechanical --> heat --> potential
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