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Tenth Grade (Grade 10) Chemistry Questions

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Grade 10 Macromolecules
Grade 10 Macromolecules
Carbohydrates are made up of the three elements of
  1. nitrogen, oxygen, and hydrogen.
  2. carbon, hydrogen, and oxygen.
  3. sulfur, hydrogen, and oxygen.
  4. nitrogen, phosphorus, and oxygen.
Grade 10 Molecules and Compounds
What is the correct name for the compound [math]MgO[/math]?
  1. magnesium trioxide
  2. dimagnesium trioxide
  3. magnesium oxide
  4. magnesium oxygen
Grade 10 Reactions
To balance a chemical equation, you may adjust the
  1. coefficients.
  2. subscripts.
  3. formulas of the product.
  4. either of coefficients or subscripts.
Grade 10 Macromolecules
Grade 10 Macromolecules
Which macromolecule holds genetic information?
  1. nucleic acids
  2. carbohydrates
  3. lipids
  4. proteins
Grade 10 Macromolecules
A carbohydrate is an organic compound because it contains
  1. phosphorus.
  2. carbon.
  3. hydrogen.
  4. oxygen.
Grade 10 Reactions
Grade 10 Periodic Table and Elements
Grade 10 Quantum Physics and the Atom

This question is a part of a group with common instructions. View group »

Which of the following represents a correct ground-state electron configuration for a silicon atom?
  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 Properties of Matter
The color of a substance is called a                  .
  1. physical property
  2. chemical property
  3. physical change
  4. chemical change
Grade 10 Periodic Table and Elements
Sodium, mercury, argon, and neon are used in the production of lamps. There are fewer safety guidelines regarding the handling of neon and argon than for mercury and sodium. Which of the following best describes the elements within the group of the Periodic Table that contains neon and argon gas?
  1. Gaseous at room temperature and highly reactive with metals
  2. Solid at room temperature and mildly reactive with strong acids
  3. Gaseous at room temperature and mostly unreactive with metals
  4. Solid at room temperature and mostly unreactive with strong acids
Grade 10 Biochemical Pathways
Living things get the energy they need from
  1. oxygen.
  2. [math]NAD^+[/math].
  3. food.
  4. air.
Grade 10 Atomic Structure

This question is a part of a group with common instructions. View group »

In a famous experiment conducted by Ernest Rutherford, positively charged alpha particles were scattered by a thin gold foil. Which of the following is a conclusion that resulted from this experiment?
  1. The nucleus is negatively charged.
  2. The atom is a dense solid and is indivisible.
  3. The mass is conserved when atoms react chemically.
  4. The nucleus is very small and the atom is mostly empty space.
Grade 10 Macromolecules
An organic compound made of sugar molecules is a
  1. carbohydrate.
  2. lipid.
  3. protein.
  4. nucleic acid.
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