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Tenth Grade (Grade 10) Bonds and Mixing Questions

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Grade 10 Bonds and Mixing

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When beryllium and selenium form an ionic bond, what is the chemical formula of the compound?
  1. Be2Se2
  2. BeSe2
  3. Be2Se
  4. BeSe
Grade 10 Bonds and Mixing
When Fe (IV) ions and oxygen form an ionic bond, what is the chemical formula of the compound?
  1. Fe4O
  2. Fe2O
  3. FeO2
  4. Fe2O4
Grade 10 Bonds and Mixing

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When Zn (I) ions and nitrogen form an ionic bond, what is the chemical formula of the compound?
  1. Zn3N
  2. ZnN
  3. Zn2N2
  4. ZnN3
Grade 10 Bonds and Mixing
The strongest and most stable chemical bonds are
  1. covalent bonds.
  2. ionic bonds.
  3. hydrogen bonds.
  4. all of equal strength.
Grade 10 Bonds and Mixing
The partial charges on a water molecule occur because of
  1. covalent bonding.
  2. the high electronegativity of hydrogen.
  3. widespread ionization.
  4. the unequal sharing of electrons between the hydrogen and oxygen.
Grade 10 Bonds and Mixing
If two oxygen atoms combine to make a molecule, what type of bond will they form?
  1. an ionic bond
  2. a hydrogen bond
  3. a double covalent bond
  4. a metallic bond
Grade 10 Bonds and Mixing
Which two elements combine to form a covalent bond?
  1. magnesium and aluminum
  2. sodium and chlorine
  3. oxygen and carbon
  4. sulfur and tin
Grade 10 Bonds and Mixing
Two or more elements chemically bound in a fixed proportion is called a(n)
  1. mixture.
  2. mass.
  3. matter.
  4. compound.
Grade 10 Bonds and Mixing
Covalent bonds result from
  1. the sharing of equal numbers of electrons by two atoms.
  2. the exchange of equal numbers of electrons by two atoms.
  3. the combination of two atoms of the same valence.
  4. sharing of unequal numbers of electrons by two atoms.
Grade 10 Bonds and Mixing
When Nb (I) ions and phosphorus form an ionic bond, what is the chemical formula of the compound?
  1. Nb3P
  2. NbP
  3. Nb2P3
  4. NbP3
Grade 10 Bonds and Mixing
Given the equation below:
HCl + energy → H + Cl
How can this equation be described?
  1. This reaction is endothermic, and the heat is released.
  2. This reaction is exothermic, and the heat is released.
  3. This reaction is exothermic, and the heat is absorbed.
  4. The reaction is endothermic, and the heat is absorbed.
Grade 10 Bonds and Mixing
What is the correct ionic symbol for potassium?
  1. K+2
  2. K+1
  3. K-2
  4. K-1
Grade 10 Bonds and Mixing
Which term correctly describes the ability of an element to attract electrons towards itself in a bond?
  1. second ionization energy
  2. ionic radius
  3. metallic character
  4. electronegativity
Grade 10 Bonds and Mixing
Tap water is a(n)
  1. an element.
  2. a compound.
  3. a substance.
  4. a mixture.
Grade 10 Bonds and Mixing
In what kind of chemical bond are electrons shared?
  1. Ionic
  2. Covalent
  3. Both
Grade 10 Bonds and Mixing
Based on considerations of bond polarity, how could the bonds in CO2 be classified?
  1. nonpolar covalent
  2. ionic
  3. polar covalent
  4. none of the above
Grade 10 Bonds and Mixing
Which of the following occurs when sodium and chlorine bond together to form sodium chloride?
  1. A chlorine atom donates an electron to a sodium atom.
  2. A chlorine atom donates a proton to a sodium atom.
  3. A chlorine atom accepts a proton from a sodium atom.
  4. A chlorine atom accepts an electron from a sodium atom.
Grade 10 Bonds and Mixing
Which of the following statements is FALSE?
  1. When Na and F bond, Na transfers one electron to F.
  2. When Ca and O bond, O transfers two electrons to Ca.
  3. When Ag(I) and I bond, Ag transfers 1 electron to I
  4. When metals and nonmetals bond, the metals transfer electrons to the nonmetals.
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