Brainpop isotopes

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

• It has nine electron shells

• It has a boiling point of 9 degrees Celsius

• It has nine protons

• It weighs nine grams

Tags

NGSS.MS-PS1-1

In what part of an atom can protons be found?

• Inside the electron shells

• Inside the atomic nucleus

• Inside the neutrons

• Inside the electrons

Since atoms are very small, what can you infer about atomic mass units?

• Atomic mass units and grams measure different properties

• One atomic mass unit is much heavier than a gram

• One atomic mass unit is much lighter than a gram

• One atomic mass unit is equivalent to a gram

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

• It has ten protons

• It has ten electrons

• It has ten neutrons

• It has nine neutrons

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 0 neutrons, its atomic number is:

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS1-1

On the periodic table, how is atomic mass represented?

• As the masses of all the protons added together

• As the mass of the most common isotope

• As the exact mass of every atom

• As an average of the mass of different isotopes

As the masses of all the protons added together 8. What do carbon-12 and carbon-14 have in common?

• They have the same atomic weight

• They have the same atomic mass

• They have the same number of neutrons

• They have the same number of protons

How is carbon-12 different from carbon-14?

• They are different elements

• They have a different number of neutrons

• They have a different number of electrons

• They have a different number of protons

What can you conclude about carbon-14 from its name?

• It has 14 neutrons

• It has an atomic mass of 14 u

• It has 14 electrons

• It has 14 protons