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Tenth Grade (Grade 10) Chemistry Questions

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Grade 10 Macromolecules
Grade 10 Periodic Table and Elements
Elements in Group 18 on the periodic table are known as                      .
  1. Alkaline earth metals
  2. the Noble Gases
  3. metalloids
  4. transition elements
Grade 10 Macromolecules
Grade 10 Periodic Table and Elements
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 Macromolecules
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
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 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 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 Molecules and Compounds
Water acts as a solvent of ionic compounds because                                                    .
  1. water molecules are polar
  2. water takes the shape of its container
  3. water is found in three states of matter
  4. water is a liquid over a wide range of temperatures
Grade 10 Periodic Table and Elements
The atomic number of an atom is always equal to
  1. the number of neutrons
  2. the number of electrons
  3. the number of protons
  4. the number of protons plus neutrons
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
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