Isotopes

What do these isotopes of carbon all have in common?

• They would all have the same number of neutrons.

• They would all have the same mass number.

• They would all have the same number of protons.

• They would all have the same atomic mass.

Tags

NGSS.MS-PS1-1

How many neutrons does this isotope of lithium have?

• 8

• 3

• 4

• 5

Tags

NGSS.MS-PS1-1

What quantities vary between the isotopes of an element?

• The number of protons.

• The number of electrons.

• The atomic numbers.

• The number of neutrons.

Which isotope has the greatest atomic mass?

• Li-6

• Li-7

• Li-8

• they all have the same atomic mass

Tags

NGSS.MS-PS1-1

Fluorine has an atomic number of 9. What can you conclude about an atom of fluorine from this fact?

• It has 9 protons.

• It has a mass of 9 amu.

• It has 9 electron energy levels.

• It was the 9th element discovered.

Tags

NGSS.MS-PS1-1

In what part of an atom can protons be found?

• in the electron cloud

• inside the neutrons

• inside the atomic nucleus

• in the area of mostly open space

Tags

NGSS.MS-PS1-1

An atom of fluorine has an atomic mass of 19 amu. Keeping in mind that its atomic number is 9, what can you infer about this atom?

• it has 9 neutrons

• it has 10 electrons

• it has 10 neutrons

• it has 10 protons

Tags

NGSS.MS-PS1-1

If a sulfur atom has 16 protons, 16 electrons, and 16 neutrons, its atomic mass is:

• 16
• 32
• 48
• 64

Tags

NGSS.MS-PS1-1

If a hydrogen atom has 1 proton, 1 electron, and 1 neutron, its atomic number is:

• 1
• 2
• 3
• 4

Tags

NGSS.MS-PS1-1

What do carbon-12 and carbon-14 have in common?

• they have same number of protons
• they have the same number of neutrons
• they have the same atomic mass
• they have the same atomic weight

Tags

NGSS.HS-PS1-8