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Tenth Grade (Grade 10) Chemistry Questions

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Grade 10 :: Properties of Matter by aronyano
Grade 10 :: Properties of Matter by aronyano
Grade 10 :: Periodic Table and Elements by Jcoutchure
Which of these substances is not an element?
  1. water
  2. hyrdrogen
  3. aluminum
  4. iron
Grade 10 :: Quantum Physics and the Atom by Melloni
Select the correct electron configuration for silicon, atomic number 14.
  1. [math]1s^2 2s^2 2p^6 3s^2 3p^6 4s^2[/math]
  2. [math]1s^2 2s^2 2p^4 3s^2 3p^4[/math]
  3. [math]1s^2 2s^2 2p^6 3s^2 3p^2[/math]
Grade 10 :: Biochemical Pathways by jlovering
What best describes how fermentation allows cells to produce ATP in anaerobic environments
  1. Citric acid transforms acetyl CoA into lactic acid or ethanol
  2. ATP is produced by splitting up pyruvic acid molecules
  3. Pyruvic acid accepts the energetic electron from NADH, oxidizing it to NAD+ and allowing glycolysis to start over
  4. Carbon fixation occurs which changes RuBP into ATP and splits water molecules
  5. Oxygen accepts the final electron in the hydrogen ion pump, producing ATP with ATP Synthase
Grade 10 :: Biochemical Pathways by jlovering
Most of the oxygen in our atmosphere is present due to
  1. The light dependent reactions of photosynthesis
  2. The Kreb's Cycle
  3. Glycolysis
  4. The Calvin Cycle
  5. Fermentation
Grade 10 :: Biochemical Pathways by jlovering
What best describes carbon fixation during the Calvin Cycle?
  1. Glucose is broken down into pyruvate and ATP
  2. Electrons are passed along the thylakoid membrane
  3. NADH is produced from NAD+
  4. Water is split and oxygen is released
  5. Carbon dioxide gas is attached to sugars
Grade 10 :: Biochemical Pathways by jlovering
The primary pigment involved in photosynthesis is:
  1. glucose
  2. chlorophyll
  3. ATP
  4. Carbon Dioxide
Grade 10 :: Biochemical Pathways by jlovering
During the ETC, what mechanism provides the energy to pump hydrogen ions against their concentration gradient?
  1. The passing of electrons from molecule to molecule
  2. Breaking the bond between the 2nd and 3rd phosphate in ATP
  3. Pyruvic Acid converting to Acetyl-CoA
  4. Absorption of light by chlorophyll
  5. Splitting water molecules
Grade 10 :: Biochemical Pathways by jlovering
Grade 10 :: Periodic Table and Elements by aronyano
On the present Periodic Table of the Elements, the elements are arranged according to increasing what?
  1. number of neutrons
  2. number of oxidation states
  3. atomic number
  4. atomic mass
Grade 10 :: Periodic Table and Elements by AnneMichelle
Which of the following will decrease as you move left to right in a period of the periodic table?
  1. electron affinity
  2. atomic radius
  3. electronegativity
  4. atomic number
Grade 10 :: Periodic Table and Elements by AnneMichelle
Which group of elements are characterized by stability and lack of reactivity?
  1. Alkaline Earth metals
  2. Alkali metals
  3. Noble gases
  4. Lanthanoids
  5. Metalloids
Grade 10 :: Periodic Table and Elements by AnneMichelle
Why does the periodic table of elements end with Uuo (Ununoctium)?
  1. Elements heavier than Uuo are unstable and decay too rapidly to be properly categorized.
  2. The periodic table of elements contains hand-picked elements by the Society of Chemistry Scholars.
  3. There are no known cases of atoms which weigh more than Uuo.
  4. Uuo is the last element that is completely stable.
  5. None of the above.
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