Lesson 2 - Structure Of An Atom
Terms in this set (9)
Name 3 subatomic particles.
Proton, electron, and neutron
Name 3 properties you could use to distinguish a proton from an electron.
Mass, charge, and location in an atom
What characteristic of an atom always varies among atoms of different elements?
The atoms of any element have a different number of protons than the atoms of all other elements.
How are the isotopes of an element different from one another?
Isotopes of an element have the same atomic number but different mass numbers because they have different numbers of neutrons.
What do neutrons and protons have in common? How are they different?
Protons and neutrons have almost the same mass and are both located in the nucleus of the atom. Protons are charged particles. Neutrons are neutral particles.
How can atoms be neutral if they contain charged particles?
The positive charge of the protons in the nucleus is balanced by the negative charge of the electrons.
What is the difference between atoms of oxygen-16 and oxygen-17?
Each oxygen-17 atom has one more neutron than each oxygen-16 atom.
What property do protons and electrons have that neutrons don't?
Protons and electrons are charged particles. Neutrons have no charge.
Why isn't it possible for an atom to have a mass number of 10 and an atomic number of 12?
An atom with an atomic number of 12 has 12 protons. Because the mass number is the sum of the protons and neutrons, the mass number would need to be at least 12.
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