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Tenth Grade (Grade 10) Molecules and Compounds Questions

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Grade 10 Molecules and Compounds
What is the name of Al2O3?
  1. Aluminum Oxide
  2. Aluminum (II) Oxide
  3. Oxide Aluminum
  4. Oxide (II) Aluminum
Grade 10 Molecules and Compounds
The correct formula for NH4CH3COO is                   .
  1. ammonium carbonate
  2. ammonium hydroxide
  3. ammonium acetate
  4. ammonium nitrate
Grade 10 Molecules and Compounds
Which of the following is not a compound?
  1. carbon dioxide
  2. salt
  3. water
  4. sugar water
Grade 10 Molecules and Compounds
What is the formula for the compound made from gold (III) and cyanide ions?
  1. AuCN
  2. Au(CN)3
  3. AuCN3
  4. Au(CN)2
Grade 10 Molecules and Compounds

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

What is the name of the compound with the chemical formula CrCl3?
  1. chromium tetrachloride
  2. chromium trichloride
  3. chromium (II) chloride
  4. chromium (III) chloride
Grade 10 Molecules and Compounds
What is the charge of Ca in CaO?
  1. -1
  2. +1
  3. 0
  4. +2
Grade 10 Molecules and Compounds
Which of these is NOT a binary compound?
  1. potassium iodide
  2. aluminum nitrate
  3. water
  4. carbon dioxide
Grade 10 Molecules and Compounds
A molecule containing polar covalent bonds is always polar.
  1. True
  2. False
Grade 10 Molecules and Compounds
Which statement correctly describes NaCl?
  1. Its charge is distributed evenly.
  2. It is a polar molecule.
  3. It is ionic, and its charges are distributed very unevenly.
  4. It contains polar covalent bonds.
Grade 10 Molecules and Compounds
Compounds are two or more elements that are                 combined.
  1. ionically
  2. physically
  3. chemically
  4. uniformly
Grade 10 Molecules and Compounds
What is the formula for Chromium (III) Chlorate?
  1. Cr3(ClO3)
  2. CrCl3
  3. Cr(ClO3)3
  4. Cr2(ClO3)
Grade 10 Molecules and Compounds
How many ions are in 0.5 moles of NaCl?
  1. 1.204x1023
  2. 3.011x1023
  3. 6.022x1023
  4. 9.033x1023
Grade 10 Molecules and Compounds
What is the formula for Nitrous Acid?
  1. HNO2
  2. NO2
  3. H2NO2
  4. HNO3
Grade 10 Molecules and Compounds
Which of the following correctly explains why water is a good solvent of ionic compounds and polar molecules?
  1. Water is a polar molecule.
  2. Water is an ionic compound.
  3. Water molecules are nonpolar.
  4. Water molecules completely separate into ions in solution.
Grade 10 Molecules and Compounds
Which molecule is polar?
  1. CCl4
  2. CO2
  3. SO3
  4. none of the these
Grade 10 Molecules and Compounds
Which of the following molecular geometries could be nonpolar?
  1. bent
  2. tetrahedral
  3. trigonal pyramidal
  4. none of the above
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