Isotopes and Calculating Atomic Mass

What is meant by isotopes of an element?

• Atoms with different numbers of protons

• Atoms with different numbers of electrons

• Atoms with different numbers of neutrons

• Atoms with different atomic numbers

What effect do isotopes have on the chemical properties (reactions) of an element?

• Isotopes have different reactions because they have different masses

• Isotopes have different reactions because they have different number of electrons

• Isotopes have the same reactions because they have the same masses

• Isotopes have the same reactions because they have the same number of electrons

Tags

NGSS.HS-PS1-8

In order for two elements to be isotopes, what has to be the SAME?

• Protons

• Electrons

• Neutrons

• Mass

In order for two elements to be isotopes, what must be DIFFERENT?

• Protons

• Electrons

• Neutrons

• Neutrons & Mass

Tags

NGSS.HS-PS1-8

Which isotope of Lithium contains 4 neutrons?

• Li-6

• Li-7

• Li-8

• They have the same # of neutrons

Tags

NGSS.MS-PS1-1

How many neutrons does an atom of the isotope Neon-22 have?

• 12
• 10
• 22
• 20

Two isotopes of carbon are carbon-12 and carbon-14.  These isotopes differ from one another by two protons.

• true
• false

Tags

NGSS.MS-PS1-1

How many protons does this isotope of titanium have?

• 48
• 22
• 26
• 70

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5

Tags

NGSS.HS-PS1-8

Found in the nucleus of the atom

• electrons only
• protons only
• neutrons and protons
• neutrons and electrons

Tags

NGSS.HS-PS1-8