isotopes

Front

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

Back

it has 9 protons

Front

In what part of an atom can protons be found?

Back

inside the atomic nucleus

Front

Since atoms are very small, what can you infer about atomic mass units? Options: one atomic mass unit is equivalent to a gram, one atomic mass unit is much lighter than a gram, one atomic mass unit is much heavier than a gram, atomic mass units and grams measure different properties

Back

one atomic mass unit is much lighter than a gram

Front

An atom of fluorine has an atomic mass of 19 u and an atomic number of 9. What can you infer about this atom?

Back

It has 10 neutrons.

Front

If a sulfur atom has 16 protons, 16 electrons, and 16 neutrons, its atomic mass is: 16, 32, 48, 64

Back

32

Front

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

Back

1

Front

On the periodic table, how is atomic mass represented?

Back

As an average of the mass of different isotopes

Front

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

Back

they have same number of protons

Front

How is carbon-12 different from carbon-14?

Back

They have a different number of neutrons.

Front

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

Back

It has an atomic mass of 14 u