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Search Results for protons - All Grades

504 questions match "protons". Refine Your Search

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Grade 9 Stars
Grade 9 Acids and Bases
Which of the following theories defines acid as a species that forms hydronium ion in water?
  1. Arrhenius theory
  2. Lewis acid-base theory
  3. Lowry-Bronsted theory
Grade 10 Atomic Structure
Which particles have a mass of 0 amu?
  1. Protons
  2. Neutrons
  3. Electrons
  4. Alpha Particles
Grade 10 Atomic Structure

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

Which statement correctly describes the relationship between the charge of a proton and the charge of an electron?
  1. Protons and electrons have the same charge.
  2. Protons have a lower charge than electrons do.
  3. Protons and electrons have opposite charges.
  4. Protons have a charge of 0, electrons have a charge of -1.
Grade 10 Atomic Structure
Which subatomic particles are located outside of the nucleus of an atom?
  1. Positively-charged protons.
  2. Negatively-charged positrons.
  3. Negatively-charged electrons.
  4. Neutrons.
Grade 5 Atomic Structure
What is a proton?
  1. A subatomic particle with no charge.
  2. A subatomic particle with a negative charge.
  3. A subatomic particle that has melted.
  4. A subatomic particle with a positive charge.
Grade 7 Chemistry
Protons have
  1. negatives charges
  2. no charge
  3. positive charges
  4. no electric charge
Grade 9 Acids and Bases
These are proton donators.
  1. buffers
  2. bases
  3. water molecules
  4. acids
Grade 10 Periodic Table and Elements
The atomic number of an element is same as the number of
  1. protons.
  2. neutrons.
  3. protons + electrons.
  4. protons + neutrons.
Grade 9 Atomic Structure
Grade 5 Periodic Table and Elements
Grade 8 Atomic Structure
Grade 9 Atomic Structure
Number of protons is called the                         .
  1. the atomic number
  2. the atomic mass
  3. the mass of the nucleous
  4. the mass of the element
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