AP Chemistry 1.2 Chemical Elements are Building Blocks
AP® Chemistry: Chemical Elements are Building Blocks Drill 1, Problem 2. Using this table, which of the following is an isotope of Atom 1?
|AP Chemistry||Chemical Elements are Building Blocks|
Chemical and Physical Properties from Structure and Arrangement
...what's an isotope?
Maybe we've heard of carbon-14... a form of carbon
that helps scientists find the age of formerly living things...
...like dinosaurs, which are totally cool...
...through radioactive dating.
Carbon-14 is an example
of an ISOTOPE of an element. An isotope of an element is something that
has the same atomic number as the element does on the periodic table,
but a different number of neutrons.
The atomic number on the periodic table is also equivalent to the number of protons,
or positively charged particles, an element has...
Really...the number of neutrons doesn't matter too much...it's "neutral," after all...
So for this question, we're looking for an isotope of Atom 1...or in other words, the
atom that has the same number of protons but a different number of neutrons.
And what do you know... only Atom 3 fits the parameters. So our answer's A.
As in, "Atom's apple."