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Atomic Structure Questions - All Grades

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Grade 9 Atomic Structure
Strong forces bind protons and neutrons together to form the                .
  1. nucleus
  2. electrons
  3. protons
  4. neutrons
  5. Atoms
Grade 11 Atomic Structure
In an electron configuration, what follows 4s?
  1. 4p
  2. 4s
  3. 3d
  4. 2f
Grade 6 Atomic Structure
A(n)                 has a negative charge.
  1. atom
  2. proton
  3. electron
  4. neutron
Grade 8 Atomic Structure
Isotopes are atoms of the same element with the same number of protons and
  1. a different number of electrons.
  2. a different number of molecules.
  3. a different number of neutrons.
  4. the same number of neutrons.
Grade 11 Atomic Structure
In chemistry, we describe an atom as
  1. the tiniest unit of matter that keeps its characteristic chemical identity.
  2. the simplest unit of a compound.
  3. always being made up of carbon.
  4. being smaller than an electron.
Grade 6 Atomic Structure
Atoms are made up of three parts: neutrons, electrons, and                .
  1. compounds
  2. protons
  3. minerals
  4. nonmetals
Grade 8 Atomic Structure
Negatively-charged particles in the atom are called                .
  1. electron cloud
  2. nucleus
  3. electrons
  4. protons
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 9 Atomic Structure
Isotopes of an element have the same number of                  .
  1. electrons
  2. neutrons
  3. protons
  4. valence electrons
Grade 9 Atomic Structure
An atom is electrically neutral if the number of                                            .
  1. electrons is equal to the atom mass
  2. neutrons is equal to electrons
  3. neutrons is equal to atom number
  4. protons is equal to the number of electrons
Grade 11 Atomic Structure
Dalton reintroduced the concept of the atom and created                           which was the basic concept of the molecule.
  1. Dalton's Molecular Theory
  2. Dalton's Atomic Theory
  3. Modern Atomic Theory
  4. Dalton's Modern Theory
Grade 6 Atomic Structure
Which particle in the atom's nucleus does not have a charge?
  1. atom
  2. proton
  3. electron
  4. neutron
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