MSLS1: Exploring Atoms and Ions

What is an ion?

• An atom with a different number of neutrons

• An atom with a different number of protons

• An atom with a different number of electrons

• An atom with a different number of nuclei

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NGSS.MS-PS1-5

What is an isotope?

• An atom with a different number of neutrons

• An atom with a different number of protons

• An atom with a different number of electrons

• An atom with a different number of nuclei

Which of the following is a cation?

• An atom with more electrons than protons

• An atom with more protons than electrons

• An atom with equal number of protons and electrons

• An atom with more neutrons than protons

Which of the following is an anion?

• An atom with more electrons than protons

• An atom with more protons than electrons

• An atom with equal number of protons and electrons

• An atom with more neutrons than protons

What is the atomic number of an element?

• The number of neutrons in the nucleus

• The number of protons in the nucleus

• The number of electrons in the atom

• The total number of protons and neutrons

What is the atomic mass of an element?

• The number of neutrons in the nucleus

• The number of protons in the nucleus

• The number of electrons in the atom

• The total number of protons and neutrons

Which particle is found outside the nucleus of an atom?

• Proton

• Neutron

• Electron

• Nucleus

What is the charge of a neutron?

• Positive

• Negative

• Neutral

• Variable

How do you calculate the number of neutrons in an atom?

• Atomic number - Atomic mass

• Atomic mass - Atomic number

• Number of protons + Number of electrons

• Number of protons - Number of electrons

Which of the following particles determines the identity of an element?

• Electron

• Proton

• Neutron

• Nucleus