Atoms, Ions, and Isotopes

Which of the following describes a negative ion?

• 8 protons, 8 neutrons, 8 electrons

• 8 protons, 8 neutrons, 10 electrons

• 8 protons, 10 neutrons, 8 electrons

• 8 protons, 8 neutrons, 6 electrons

Tags

NGSS.MS-PS1-1

What is the purpose of the neutrons?

• Identifies the element.

• Holds the nucleus together.

• Determines reactivity.

Which subatomic particles would repel away from each other?

• protons and neutrons

• protons and electrons

• electrons and electrons

• electrons and neutrons

Tags

NGSS.MS-PS2-3

The majority of an atom's mass comes from which particle(s)?

• Protons

• Protons + electrons

• Electrons

• Protons + neutrons

Atomic mass is __________.

• a whole number

• protons + neutrons

• the mass found on the periodic table

• equal to the mass number of the most common isotope

If a neutral atom of Carbon gains or loses electrons it is now classified as

• an ion

• an isotope

• an atom

• an electron

Identify the number of protons, neutrons and electrons in Magnesium - 26.

• Protons = 12, Neutrons = 12, Electrons = 12

• Protons = 12, Neutrons = 14, Electrons = 12

• Protons = 14, Neutrons = 12, Electrons = 12

• Protons = 12, Neutrons = 12, Electrons = 14

Identify the number of protons, neutrons and electrons of Mg^-2

• Protons = 12, Neutrons = 12, Electrons = 12

• Protons = 14, Neutrons = 12, Electrons = 12

• Protons = 12, Neutrons = 14, Electrons = 12

• Protons = 12, Neutrons = 12, Electrons = 14

Tags

NGSS.MS-PS1-1

Identify the number of protons, neutrons and electrons of Mg⁺²

• Protons = 12, Neutrons = 12, Electrons = 12

• Protons = 14, Neutrons = 12, Electrons = 12

• Protons = 12, Neutrons = 12, Electrons = 10

• Protons = 12, Neutrons = 12, Electrons = 14

Tags

NGSS.MS-PS1-1

What is the difference between an ion and an isotope?

• An ion has a change in number of electrons, an isotope has a change of number in protons.

• An ion has a change in number of protons, an isotope has a change in number of electrons.

• An ion has a change in number of neutrons, an isotope has a change in number of electrons.

• An ion has a change in number of electrons, an isotope has a change in number of neutrons.