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Tenth Grade (Grade 10) Chemistry Questions

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Grade 10 Matter
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 Reactions
In what type of reaction does one reactant form two or more products?
  1. single replacement
  2. decomposition
  3. synthesis
  4. double replacement
Grade 10 Macromolecules
Grade 10 Atomic Structure
If you add an additional neutron to an atom, what do you create?
  1. a new element
  2. an isotope
  3. a reaction
  4. an ion
Grade 10 Thermodynamics
Which phase change involves a solid directly changing into a gas?
  1. Deposition
  2. Sublimation
  3. Condensation
  4. Evaporation
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
Grade 10 Macromolecules
Which macromolecule holds genetic information?
  1. nucleic acids
  2. carbohydrates
  3. lipids
  4. proteins
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
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 Matter
The partial pressure of a gas in a mixture of gases placed in a vessel is                                                                                           .
  1. the ratio of the pressure exerted by this gas to the total pressure exerted by the mixture
  2. the total pressure diminished by the pressure of this gas
  3. the pressure a gas would exert if it were alone in the vessel.
  4. the negative pressure exerted by the gas in the mixture
Grade 10 Kinetics and Equilibrium
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
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