Isotopes

How many neutrons does the isotope of lithium have?

• 8
• 3
• 4
• 5

Tags

NGSS.MS-PS1-1

What quantities vary between isotopes of an element?

• protons, electrons, and atomic mass
• protons, electrons, and atomic number
• neutrons and electrons
• neutrons and atomic mass

Tags

NGSS.HS-PS1-8

which atom has  4 neutrons?

• Li-6
• Li-7
• Li-8
• they have the same # of neutrons

Tags

NGSS.MS-PS1-1

Isotopes are atoms of the same element with different #’s of __________ & therefore different __________.

• n⁰ ;  atomic #’s
• p⁺ ; atomic #’s
• e^- ; atomic masses
• n⁰ ; atomic masses

If the number of electrons in an atom changes you make a(n) __________________.

• ion
• isotope
• new element
• isomer

Ions are: 

• atoms with a positive or negative charge
• atoms with no charge
• atoms with ONLY a positive charge
• atoms with ONLY a negative charge

How many neutrons in C-14?

• 6
• 7
• 14
• 8

^{The photo above shows the isotopic notation for which isotope?}

• Carbon 12
• Carbon 13
• Carbon 14
• Carbon 15

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

• it has 9 protons
• it weighs 9 grams
• it has 9 electron shells
• it has a boiling point of 9 degree celsius

Tags

NGSS.MS-PS1-1

In what part of an atom can protons be found?

• inside the electron
• inside the neutron
• inside the atomic nucleus
• inside the electron shells