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Ninth Grade (Grade 9) Molecules and Compounds Questions

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Grade 9 Molecules and Compounds
Grade 9 Molecules and Compounds
Grade 9 Molecules and Compounds

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

[math]NH_4^+[/math] is named
  1. cyanide
  2. hydroxide
  3. hydronium
  4. ammonium
Grade 9 Molecules and Compounds
Grade 9 Molecules and Compounds
A compound contains two or more
  1. elements physically combined.
  2. simple substances.
  3. elements chemically combined.
  4. nuclei combined with electrons
Grade 9 Molecules and Compounds
Grade 9 Molecules and Compounds
Grade 9 Molecules and Compounds
A single water molecule is held together by what kind of bonds?
  1. polar covalent bonds
  2. nonpolar covalent bonds
  3. hydrogen bonds
  4. ionic bonds
Grade 9 Molecules and Compounds
Grade 9 Molecules and Compounds
Select two options from the following list that qualify as types of pure substances:
  1. a substance
  2. an atom
  3. an element
  4. a particle
  5. matter
  6. a compound
Grade 9 Molecules and Compounds
[math]O_2^(2-[/math] is named
  1. oxalate
  2. peroxide
  3. hydroxide
  4. hydronium
Grade 9 Molecules and Compounds
[math]HCO_3^-[/math] is named
  1. chlorite
  2. chlorate
  3. hydrogen sulfate
  4. hydrogen carbonate
Grade 9 Molecules and Compounds
Which of these represents a formula for a chemical compound?
  1. [math]H[/math]
  2. [math]C[/math]
  3. [math]H_2O[/math]
  4. [math]P[/math]
Grade 9 Molecules and Compounds
Water is a polar molecule because
  1. it contains two hydrogen atoms for each oxygen atom.
  2. both ends carry a positive charge.
  3. each end of the molecule has a different charge.
  4. both ends carry a negative charge.
Grade 9 Molecules and Compounds
Cohesion is when
  1. water molecules stick to other types of molecules
  2. water molecules stick to other water molecules.
  3. our cells maintain homeostasis.
  4. ice floats in water.
Grade 9 Molecules and Compounds
[math]C_2O_4^(2-[/math] is named
  1. oxalate
  2. peroxide
  3. hydroxide
  4. carbonate
Grade 9 Molecules and Compounds
Two or more elements combined is called a
  1. substance
  2. solution
  3. compound
  4. colloid
Grade 9 Molecules and Compounds
[math]PO_4^(3-[/math] is named
  1. acetate
  2. phosphate
  3. perchlorate
  4. phosphonium
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