Reading...
Play button
Play button
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;
8 Cards in this Set
- Front
- Back
|
Atom
|
is a subatomic particle that make up atoms are protons, neutrons and electrons. Atoms have the same amount of protons and electrons so their charge balances out and become neutral.
|
|
|
Protons
|
positively charged and has the same mass as a neutron. (+)
|
|
|
Neutrons
|
have no charge at all same mass a proton.
|
|
|
Electron
|
Negative charged atom that keep moving outside the nucleus because the energy is always moving. (-)
|
|
|
Element
|
A pure substance that is one type of atom.
Ex. H for Hydrogen Na for Sodium |
|
|
Atomic number
|
The number of protons in the nucleus of an element. Is in the top left corner.
|
|
|
Isotopes
|
Atoms of the same element that differ in the number of neutrons identified by their mass number.
|
|
|
Mass number
|
The total number of protons and neutrons in the nucleus of an atom
|
