Atomic Structure Flashcards
If an atom has an atomic number of 35 and has 40 neutrons, it has a mass number of _____.
75
The _____ is the particle with a negative charge.
electron
If an atom has an atomic number of 23 and has 15 neutrons, it has _____ electrons.
23
If an atom has 35 positive particles, it has _____ negative particles.
35
The proton has a _____ charge.
positive
The _____ are located in the nucleus.
protons and neutrons
The _____ are located outside the nucleus.
electrons
The _____ is the particle in the atom with no charge.
neutron
The _____ have the same mass.
protons and neutrons
The proton has a mass of _____ amu.
1
The electron has a mass of _____ amu.
0
The neutron has a mass of _____ amu.
1
True/False: The nucleus is about the same size as the electron cloud.
False
If the atom where the size of a stadium, the nucleus would be the size of ___. (the stadium, a car, a bleacher, or a marble)
a marble
Atom #1 has 14 protons, 15 neutrons, and 14 electrons.
Atom #2 has an atomic number of 14 and a mass number of 30.
These atoms are ____. (different elements or isotopes)
isotopes
Atoms with the same number of protons but different number of neutrons are called _____.
isotopes
An atom has 1 proton and a mass number of 1. It has _____ neutrons.
0
The _____ number identifies the element.
atomic
The _____ number is the size of the atom.
mass
An atom has 10 electrons and a mass number of 22. It has _____ neutrons.
12
Atom #1 has 4 electrons and 6 neutrons.
Atom #2 has an atomic number of 6 and a mass number of 10.
These atoms are _____. (different elements or isotopes)
different elements
An atom has 10 electrons and a mass number of 22. It has an atomic number of _____.
10
This is the central core of the atom
nucleus
This surrounds the central core
electron cloud
