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Atomic Structure Questions - All Grades

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Grade 10 Atomic Structure

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Grade 9 Atomic Structure
Which subatomic particle has a positive charge?
  1. proton
  2. neutron
  3. electron
  4. nucleus
Grade 10 Atomic Structure
Which of the following pairs shows isotopes of the same element?
  1. [math]""_6 ^12C and ""_6 ^12C [/math]
  2. [math]""_6 ^14C and ""_7 ^14N [/math]
  3. [math]""_6 ^14C and ""_6 ^12C [/math]
  4. [math]""_6 ^14C and ""_6 ^14C^-4 [/math]
Grade 9 Atomic Structure
Grade 10 Atomic Structure

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

Grade 9 Atomic Structure
Grade 10 Atomic Structure
An atom consists of what key, primary components?
  1. ions, protons, electrons
  2. protons, electrons, molecules
  3. protons, electrons, neutrons
  4. elements, neutron protons
Grade 9 Atomic Structure
Why does an atom have no net electric charge?
  1. Its subatomic particles carry no electrical charge.
  2. The positively charged protons cancel out the negatively charged neutrons.
  3. The positively charged neutrons cancel out the negatively charged electrons.
  4. The positively charged protons cancel out the negatively charged electrons.
Grade 9 Atomic Structure
Grade 9 Atomic Structure
What are the three particles that make up an atom?
  1. protons, neutrons, and isotopes
  2. neutrons, isotopes, and electrons
  3. positives, negatives, and electrons
  4. protons, neutrons, and electrons
Grade 9 Atomic Structure
The center of an atom is called the
  1. electron.
  2. proton.
  3. nucleus.
  4. carbon.
  5. ion.
Grade 10 Atomic Structure

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

Thallium has two isotopes, thallium-203 and thallium- 205. Thallium's atomic number is 81, and its atomic mass is 204.38 amu. Which statement about the thallium isotopes is true?
  1. There is more thallium-203 in nature
  2. Atoms of both isotopes have 81 protons
  3. Thallium-205 atoms have fewer neutrons
  4. The most common atom of thallium has a mass of 204.38 amu.
Grade 10 Atomic Structure

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

In a famous experiment conducted by Ernest Rutherford, positively charged alpha particles were scattered by a thin gold foil. Which of the following is a conclusion that resulted from this experiment?
  1. The nucleus is negatively charged.
  2. The atom is a dense solid and is indivisible.
  3. The mass is conserved when atoms react chemically.
  4. The nucleus is very small and the atom is mostly empty space
Grade 10 Atomic Structure
Grade 10 Atomic Structure
The chemical properties of an atom and the types of bonds it may make are primarily determined by the number of
  1. neutrons it has in its nucleus.
  2. protons it has in its nucleus.
  3. energy levels it has.
  4. electrons it has in its outermost energy level.
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