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Ninth Grade (Grade 9) Atomic Structure Questions

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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 Atomic Structure
The center of an atom is called the
  1. electron.
  2. proton.
  3. nucleus.
  4. carbon.
  5. ion.
Grade 9 Atomic Structure
Atoms that lose electrons and have a positive charge are called                  .
  1. cations
  2. anions
  3. oxidation numbers
  4. none of the above
Grade 9 Atomic Structure
Select the correct statement concerning atoms and molecules.
  1. Atoms and molecules are the same.
  2. Atoms are similar to molecules, just smaller.
  3. A atom is the smallest unit of an element and a molecule is the smallest unit of a compound.
  4. A molecule is the smallest unit of an element and a atom is the smallest unit of a compound.
Grade 9 Atomic Structure
An atom becomes negatively charged when it                 .
  1. gains electrons
  2. gains protons
  3. shares electrons
  4. gains molecules
  5. loses a neutron
Grade 9 Atomic Structure
The nucleus if made up of
  1. protons and electrons.
  2. electrons and neutrons.
  3. protons and neutrons.
  4. protons, neutrons, and electrons.
Grade 9 Atomic Structure
Electrons have a                 charge.
  1. positive
  2. neutral
  3. negative
Grade 9 Atomic Structure
What are atoms with a positive or negative charge are called?
  1. compounds
  2. molecules
  3. ions
  4. isotopes
Grade 9 Atomic Structure

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

The charge on an ion is the same as the                  of that ion.
  1. binary compound
  2. oxidation number
  3. polyatomic ion
  4. hydrate
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