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Eighth Grade (Grade 8) Chemistry Questions

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Grade 8 Periodic Table and Elements
How many neutrons in an atom of chlorine?
  1. 16
  2. 17
  3. 18
  4. 35
Grade 8 Acids and Bases
A solution at pH 11.5 is                  .
  1. acidic
  2. basic
  3. neutral
  4. none of the above
Grade 8 Matter
Vaporization that takes place inside a liquid is called                .
  1. evaporation
  2. boiling
  3. condensation
  4. sublimation
Grade 8 Periodic Table and Elements
What is Cu?
  1. Copper
  2. Zinc
Grade 8 Properties of Matter
Angel's favorite bike begins to rust. The rust is an example of which of the following?
  1. Physical change
  2. Exothermic reaction
  3. Endothermic reaction
  4. Chemical change
Grade 8 Bonds and Mixing
What are the two major categories of matter?
  1. Atoms and molecules
  2. Homogeneous and heterogeneous mixtures
  3. Mixtures and substances
  4. Elements and compounds
Grade 8 Molecules and Compounds
CaCO3 represents a chemical                .
  1. symbol
  2. subscript
  3. formula
  4. reaction
Grade 8 Properties of Matter
Given the mass and density of an object, which equation should be used to calculate the volume of the object?
  1. volume=massdensity
  2. volume=densitymass
  3. volume=mass+density
  4. volume=density×mass
Grade 8 Reactions
Which of the following is an indicator of a chemical change or reaction?
  1. a solid dissolves
  2. a new substance is formed
  3. water turns to steam
  4. a mixture is made
Grade 8 Solvents, Solutes, and Solubility
The universal solvent is                     .
  1. oil
  2. alcohol
  3. acetylsalicylic acid
  4. water
Grade 8 Matter
Liquids form into
  1. any shape.
  2. the shape of their container.
  3. no shape.
Grade 8 Bonds and Mixing
The ways in which an atom can bond with other atoms is determined by the                                         .
  1. number of energy levels of the electrons
  2. number of valence electrons
  3. shape of the valence electrons
  4. period in which the atom falls
Grade 8 Periodic Table and Elements

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

The Periodic Table is organized so the periods are numbered and run
  1. horizontally.
  2. vertically.
  3. diagonally.
  4. in a figure eight.
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