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Ninth Grade (Grade 9) Molecules and Compounds Questions

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Grade 9 Molecules and Compounds
A(n)                 is an ion containing more than one element.
  1. oxidation number
  2. binary compound
  3. polyatomic ion
  4. hydrate
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

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NH+4 is named
  1. cyanide.
  2. hydroxide.
  3. hydronium.
  4. ammonium.
Grade 9 Molecules and Compounds
A chemical combination of two or more elements is called a(n)                .
  1. element
  2. isotope
  3. molecule
  4. compound
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
What is a combination of two or more different substances that are bonded chemically?
  1. mixture
  2. compound
  3. element
  4. chemical
Grade 9 Molecules and Compounds
Which term describes the cohesion of water molecules at the surface of an ocean or another body of water?
  1. Surface tension
  2. water skin
  3. adhesion
  4. solubility
Grade 9 Molecules and Compounds
What are common characteristics of metallic bonds?
  1. Valence shells of atoms overlap; an electron sea.
  2. They do not contain electrons.
  3. Only protons and neutrons are present.
  4. None of the above.
Grade 9 Molecules and Compounds
Which of these represents a formula for a chemical compound?
  1. H
  2. C
  3. H2O
  4. P
Grade 9 Molecules and Compounds
How many atoms are in one molecule of CO?
  1. one
  2. two
  3. three
  4. four
Grade 9 Molecules and Compounds
In polar molecules such as water, there is an uneven distribution of which of the following?
  1. Solvent
  2. Electrons
  3. Energy
  4. Temperature
Grade 9 Molecules and Compounds
Which of these are properties of salts?
  1. weak electronegativity
  2. high melting points
  3. malleable
  4. conductivity
Grade 9 Molecules and Compounds
How many atoms are in a molecule of glucose, C6H12O6?
  1. 11
  2. 12
  3. 24
  4. 22
Grade 9 Molecules and Compounds
HCO-3 is named
  1. chlorite.
  2. chlorate.
  3. hydrogen sulfate.
  4. hydrogen carbonate.
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
Two or more elements combined is called a                .
  1. substance
  2. solution
  3. compound
  4. colloid
Grade 9 Molecules and Compounds
What are ternary compounds?
  1. These are only composed of one or two elements
  2. These are composed of one element
  3. These contain only metals
  4. These are composed of three or more elements
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