17 Questions
What do carbon-12 and carbon-13 differ in?
Number of neutrons
What is the main difference between oxygen-16 and oxygen-18?
Number of neutrons
Which statement best describes the composition of ions?
They are charged atoms or molecules
In an atom with 20 protons, 20 electrons, and 25 neutrons, what is its mass number?
45
What is the number of electrons in an atom with 30 protons and 35 neutrons?
30
Which ion has 18 protons and 16 electrons?
Cl +
Which of the following states of matter has the strongest intermolecular attractive forces?
Solid
What is the physical process that results in the transition of a substance from a solid to a liquid state?
Melting
What is the physical process that results in the transition of a substance from a liquid to a gas state?
Evaporation
Which of the following molecules have an unequal or asymmetrical distribution of electrons among the atoms in the molecule?
Polar Molecules
Which of the following is the weakest type of intermolecular force?
London Dispersion Force
What type of chemical bond is the electrostatic attraction between an ion and a neutral molecule that has a dipole?
Ion-Dipole Bond
Which of the following is true about isotopes?
Isotopes of an element have the same number of protons but different numbers of neutrons.
Which of the following statements about carbon-12 and oxygen-14 is correct?
Carbon-12 has 6 protons and 6 neutrons, while oxygen-14 has 8 protons and 8 neutrons.
What is the difference between oxygen-16 and oxygen-17?
They have different numbers of neutrons.
Which of the following is an example of a positive ion?
An atom with more protons than electrons
Which of the following elements has the most stable isotope?
Carbon
Test your knowledge on isotopes and ions in chemistry. Identify the differences between isotopes of carbon and oxygen, as well as the definition of an ion.
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