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Ninth Grade (Grade 9) Chemistry Questions

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Grade 9 Acids and Bases
A substance with a pH of 1.5 is classified as a/an                  .
  1. acid
  2. base
  3. neutral
  4. salt
  5. none of the above
Grade 9 Atomic Structure
Which subatomic particle is NOT found in the nucleus of an atom?
  1. proton
  2. neutron
  3. electron
  4. ion
Grade 9 Atomic Structure
The central part of the atom is called the                .
  1. nucleous
  2. nucleus
  3. neutron
  4. nuclear
Grade 9 Periodic Table and Elements
Hydrogen is known as an alkali metal.
  1. True
  2. False
Grade 9 Properties of Matter
What is matter?
  1. anything that has mass and takes up space
  2. anything that has momentum and takes up space
  3. the study of properties of mass and how it changes
  4. something that cannot be broken down nto any other substances
Grade 9 Solvents, Solutes, and Solubility
A liquid substance capable of dissolving other substances is called a                .
  1. solution
  2. solute
  3. dissolver
  4. solvent
Grade 9 Periodic Table and Elements
Elements in the same period have the same number of                  .
  1. protons
  2. neutrons
  3. energy levels
  4. valence electrons
Grade 9 Properties of Matter
Which one of the following substances will float in water? The density of water is 1.0g/cm3.
  1. density of gold=19.3g/cm3
  2. density of milk=1.03g/cm3
  3. density of ice=0.92g/cm3
Grade 9 Molecules and Compounds
Cations and anions are examples of what type of elemental compound?
  1. Ionic compounds that are either negative or positive
  2. Plyatomic atoms
  3. Diatomic atoms
  4. None of the above
Grade 9 Periodic Table and Elements
Nitrogen is lustrous and is a good conductor of electricity.
  1. True
  2. False
Grade 9 Macromolecules
The energy needed to start a chemical reaction is called the
  1. lightning.
  2. heat energy.
  3. reaction energy.
  4. activation energy.
Grade 9 Matter
In what temperature range does water exist as a liquid?
  1. 1-50 degrees Celsius
  2. 0-100 degrees Celsius
  3. 50-100 degrees Celsius
  4. 34-86 degrees Celsius
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