Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
atom
|
the basic structural unit of an element. The smallest unit of an element that still retains the chemical properties of that element.
|
|
parts of an atom
|
electrons, protons, neutrons, nucleus
|
|
nucleus
|
a small, dense, positively charged region in the center of the atom. Made up of protons and neutrons.
|
|
electron
|
negatively charged and located outside the nucleus. Move rapidly in a large volume of space.
|
|
proton
|
positively charged and has equal magnitude with electrons.
|
|
neutral atom
|
has the same number of protons and electrons. Has no charge.
|
|
atomic number
|
number of protons
|
|
mass number
|
sum of protons and neutrons
|
|
number of neutrons
|
mass number - atomic number
|
|
number of electrons
|
number of protons, if the atom is positively charged
|
|
isotopes
|
-atoms of the same element having different masses.
-Same number of protons, different number of neutrons. -same chemical properties, different physical properties. -some isotopes are radioactive |