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Ninth Grade (Grade 9) Chemistry Questions

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Grade 9 Organic Chemistry
Sucrose is a                                 , while starch is a                                 .
  1. monosaccharide; polycarbohydrate
  2. disaccharide; polysaccharide
  3. monosaccharide; disaccharide
  4. monosaccharide; carbohydrate
  5. monosaccharide; polysaccharide
Grade 9 Molecules and Compounds
Pure substances are made up of one or more elements chemically combined.
  1. Compounds
  2. Elements
  3. Electrons
  4. Solutions
  5. Mixtures
Grade 9 Biochemical Pathways
Photosynthesis is an instance of
  1. homeostasis.
  2. reproduction.
  3. metabolism.
  4. growth and development.
  5. cell structure.
Grade 9 Matter
Building blocks of matter are called                .
  1. mass
  2. RNA
  3. neutrons
  4. atoms
  5. protons
Grade 9 Acids and Bases
Substances that release hydroxide ions (OH-) when dissolved in water.
  1. acids
  2. bases
  3. elements
  4. salts
  5. atoms
Grade 9 Macromolecules
The substrate binds to the enzyme at the
  1. neuroreceptor.
  2. active site.
  3. reception area.
  4. receiving site.
Grade 9 Biochemistry
The combined observations of Mattias Schleiden, Theodor Schwann, and Rudolph Virchow resulted in the formation of the cell theory. Which of the following is part of the cell theory?
  1. All cells contain the same organelles.
  2. All cells arise from carbon molecules.
  3. All living things are made of one or more cells.
  4. Cells are complex units of structure and function in organisms.
Grade 9 Atomic Structure
Two atoms can share more than one pair of                     .
  1. protons
  2. neutrons
  3. electrons
  4. interparticle forces
Grade 9 Bonds and Mixing
A shared pair of electrons is called                .
  1. a covalent bond
  2. an ionic bond
  3. an energy level
  4. a compound
Grade 9 Macromolecules

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

Animals utilize                 as an energy source that can be stored in the liver.
  1. proteins
  2. nucleic acids
  3. carbohydrates
  4. lipids
Grade 9 Macromolecules
What is the primary purpose and function of enzymes, in the context of reactions that occur within living cells?
  1. They lower the active site energy of the reaction.
  2. They lower the speed of the reaction.
  3. They lower the temperature of the reaction.
  4. They lower the activation energy of the reaction.
Grade 9 Reactions
A reaction that forms water and a salt is called a                        .
  1. chemical reaction
  2. basic reaction
  3. neutralization reaction
  4. none of the above
Grade 9 Periodic Table and Elements
A chlorine atom attains an octet by                        .
  1. gaining one electron
  2. gaining three electrons
  3. losing one electron
  4. losing five electrons
Grade 9 Acids and Bases
A substance with a pH of 0 is a                .
  1. neutral
  2. strong acid
  3. strong base
  4. metal
  5. non-metal
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