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Eleventh Grade (Grade 11) Molecules and Compounds Questions

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Grade 11 Molecules and Compounds

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In chemistry, we describe a compound as
  1. a pure substance that cannot be broken down into simpler, stabler substances.
  2. a substance that is made up of two or more atoms that are chemically bonded that can be broken down into simpler, stabler substances.
  3. the smallest unit of matter that keeps its characteristic chemical identity.
  4. any substance of any kind, whether it is bonded or not.
Grade 11 Molecules and Compounds
Elements that are composed of only two atoms with the same chemical elements are called                    .
  1. ionic bonds
  2. polyatomic ions
  3. diatomic elements
  4. molecular compounds
Grade 11 Molecules and Compounds
What are two or more charged atoms held together by covalent bonds called?
  1. Polyatomic Ions
  2. Molecular Compounds
  3. Binary Compounds
  4. Covalent Bonds
Grade 11 Molecules and Compounds

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

What kinds of elements are found in an ionic compound?
  1. Two metals
  2. Three nonmetals
  3. Three metals and three nonmetals
  4. One metal and one nonmetal
Grade 11 Molecules and Compounds
Which of the following is an example of a pure substance?
  1. Salt Water
  2. Italian salad dressing
  3. Salt (NaCl)
  4. Air
Grade 11 Molecules and Compounds
The building blocks for nucleic acids.
  1. Proteins
  2. Amino Acids
  3. Nucleotides
  4. Fatty Acids
Grade 11 Molecules and Compounds

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

What are chemical compounds consisting of only two elements called?
  1. Molecular Compounds
  2. Binary Compounds
  3. Chemical Nomenclature
  4. Polyatomic Ions
Grade 11 Molecules and Compounds
What is the correct nomenclature for the following compound?
ClO2
  1. Chlorine Oxide
  2. Chlorine Trioxide
  3. Chlorine Dioxide
  4. Dichlorine Oxide
Grade 11 Molecules and Compounds
What are neutral atoms that are held together by covalent bonds called?
  1. Polyatomic Ions
  2. Binary Compounds
  3. Ternary Compounds
  4. Molecular Compounds
Grade 11 Molecules and Compounds
It is composed of carbon, hydrogen, and oxygen and contains aldehyde or ketone groups.
  1. proteins
  2. carbohydrates
  3. lipids
  4. fatty acids
Grade 11 Molecules and Compounds
A fluorine molecule is formed by                                  .
  1. p-p orbitals (sidewise overlap)
  2. p-p orbitals (end to end overlap)
  3. sp-sp orbitals overlaps
  4. s-s orbitals overlaps
Grade 11 Molecules and Compounds
What makes hydrogen bonding between water molecules, ammonia molecules, or molecule of hydrogen fluoride so strong?
  1. There is an attraction between a small, weakly electronegative hydrogen atom and a large, strongly electronegative atom of fluorine, nitrogen, or oxygen.
  2. There is an attraction between a small, highly electronegative hydrogen atom and a large, highly electronegative fluorine atom.
  3. There is an attraction between the hydrogen and oxygen atoms, only.
  4. There is an attraction between the hydrogen and nitrogen atoms, only.
Grade 11 Molecules and Compounds
What is the naming of chemical compounds known as?
  1. Hydrocarbons
  2. Molecular Compounds
  3. Diatomic Elements
  4. Chemical Nomenclature
Grade 11 Molecules and Compounds
Elongate molecules with a carboxylic acid group are called                .
  1. proteins
  2. carbohydrates
  3. lipids
  4. fatty Acids
Grade 11 Molecules and Compounds
Magnesium has two valence electrons.
  1. True
  2. False
Grade 11 Molecules and Compounds
The VSEPR model is important because it can be used to
  1. find molecular shape.
  2. find ion charge.
  3. draw correct resonance structures.
  4. measure intermolecular distances.
Grade 11 Molecules and Compounds
Among the following, what is the molecule with linear geometry?
  1. C2H4
  2. BeF2
  3. NH3
  4. H2O
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