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Chemistry Questions - All Grades

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Grade 6 Properties of Matter
What is the density?

Mass = 120 g
Volume = 96 mL
  1. 1.52 g/mL
  2. 0.33 g/mL
  3. 1.20 g/mL
  4. 1.25 g/mL
Grade 8 Acids and Bases
Grade 9 Biochemical Pathways
Grade 9 Macromolecules
How do enzymes help chemical reactions to occur?
  1. They speed up reactions by adding more substrates to react with enzymes
  2. They slow down reactions by increasing the activation energy
  3. They speed up chemical reactions by lowering the activation energy required
  4. They slow down reactions by changing the overall temperature of the reaction
Grade 9 Biochemical Pathways
Which of the following are typically products of cellular respiration?
  1. carbon dioxide and water
  2. oxygen and carbon dioxide
  3. water and glucose
  4. glucose and oxygen
Grade 8 Biochemical Pathways
Which of the following statements correctly describes a primary distinction between respiration and photosynthesis?
  1. Photosynthesis needs oxygen, while respiration needs water
  2. Photosynthesis needs carbon dioxide, while respiration needs oxygen and sugars
  3. Photosynthesis makes oxygen, while respiration makes water
  4. Photosynthesis makes water, while respiration makes carbon dioxide
Grade 9 Biochemical Pathways
Which of the following are typically products of photosynthesis?
  1. oxygen and carbon dioxide
  2. glucose and oxygen
  3. carbon dioxide and water
  4. water and glucose
Grade 9 Biochemical Pathways
Which of the following correctly describes the purpose of photosynthesis?
  1. To release energy by decomposing glucose
  2. To store energy in the form of carbon dioxide
  3. To use sunlight energy to make sugars
  4. To create water for hydration
Grade 9 Properties of Matter
Which one of the following substances will float in water? The density of water is [math]1.0 g//cm^3[/math]
  1. [math]"density of gold" = 19.3 g//cm^3[/math]
  2. [math]"density of milk" = 1.03 g//cm^3[/math]
  3. [math]"density of ice" = 0.92 g//cm^3[/math]
Grade 10 Atomic Structure
Which of the following pairs shows isotopes of the same element?
  1. [math]""_6 ^12C and ""_6 ^12C [/math]
  2. [math]""_6 ^14C and ""_7 ^14N [/math]
  3. [math]""_6 ^14C and ""_6 ^12C [/math]
  4. [math]""_6 ^14C and ""_6 ^14C^-4 [/math]
Grade 9 Biochemical Pathways
Grade 7 Properties of Matter
What is the density of an object that has a mass of [math]184 g[/math] and a volume of [math]50 cm^3[/math]?
  1. [math]9200 g // cm^3[/math]
  2. [math]3.68 g // cm^3[/math]
  3. [math].271 g // cm^3[/math]
  4. [math]3.74 g // cm^3[/math]
Grade 9 Macromolecules
What is the location where the substrate binds to the enzyme?
  1. neuroreceptor
  2. active site
  3. reception area
  4. receiving site
Grade 9 Macromolecules
What are the reactants called in an enzyme-catalyzed reaction?
  1. Carbon dioxide and water
  2. Inhibitors
  3. Active sites
  4. Substrates
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