The Composition of Atoms Quick Check
Science 8 Q1 / Matter Interactions
Which statement about an atom is correct?(1 point)
The neutron has a negative charge and is found in the nucleus.
The electron has a negative charge and is found outside of the nucleus.
The proton has no charge and is found in the nucleus.
The neutron has no charge and is found outside of the nucleus.
The electron has a negative charge and is found outside of the nucleus.
A student wants to draw a model of an atom. Which statement describes how to find the number of neutrons to include in the model?(1 point)
Responses
Add the atomic number and the mass number.
Subtract the atomic number from the mass number.
Add the number of electrons to the number of protons.
Subtract the number of electrons from the number of protons.
Subtract the atomic number from the mass number.
Which of the following does the atomic number of an atom represent?(1 point)
Responses
the number of particles in the nucleus of the atom
the number of neutrons in the atom
the number of protons in the atom
the number of particles outside the nucleus of the atom
The number of protons in the atom.
The correct statement about an atom is:
The electron has a negative charge and is found outside of the nucleus.
To determine the correct statement about an atom, we need to review the composition of an atom. An atom is made up of three subatomic particles: protons, neutrons, and electrons.
Protons have a positive charge and are found in the nucleus, which is the central region of the atom. Neutrons have no charge and are also found in the nucleus. Electrons have a negative charge and are found in the electron cloud outside of the nucleus.
Given this information, we can see that the correct statement about an atom is:
The electron has a negative charge and is found outside of the nucleus.