Terms in this set (15)
Name three subatomic particles.
Proton, electron, neutron
Name three properties you could use to distinguish a proton from an electron.
Mass, charge, location in an atom
Which characteristic of an atom always varies among atoms of different elements?
Number of protons
How are the isotopes of an element different from one another?
They have different numbers of neutrons and therefore different mass numbers.
What is a proton?
A positively charged subatomic particle found in an atom's nucleus
What is an electron?
A negatively charged subatomic particle found in the space outside the nucleus
What is a neutron?
A neutral subatomic particle found in an atom's nucleus
What is an atomic number?
The number that equals the number of protons in an atom of the element it pertains to
What is a mass number?
The number that equals the sum of the protons and neutrons in the nucleus of an atom of the element it pertains to
What are isotopes?
Atoms of the same element with different numbers of neutrons and mass numbers
What do neutrons and protons have in common? How are they different?
They have equal masses and are both in the nucleus of an atom, but they have different charges.
How can atoms be neutral if they contain charged particles?
If they contain an equal amount of protons and electrons, they balance each other out and the atom is neutral.
What is the difference between atoms of oxygen-16 and oxygen-17?
Oxygen-16 has one less neutron than oxygen-17.
What property do protons and electrons have that neutrons do not?
They have charge.
Explain why it isn't possible for an atom to have a mass number of 10 and an atomic number of 12.
The mass number is protons plus neutrons and the atomic number is protons, and you cannot have an negative amount of neutrons.