Exam- Atoms Flashcards
Same a number of protons identifies element
Atomic number
Substance that can’t be broken down into a simpler form
Element
When protons equal electrons
Neutral atom
Positively charged particle
Proton
Protons plus neutrons
Atomic mass
Substance that has two or more part of the elements chemically combined
Compound
An atom with in an equal number of protons and electrons
Ion
Smallest part of an element
Atom
Neutral part of nucleus
Neutron
The atomic number is always the same as _________
Number of protons
The atomic mass is the combined mass of _________ and ___________
Neutrons and protons
If protons equals electrons then is considered a _____________ atom. If there an equal we call it a____________. _____________(same as before) can be positive or negative
Neutral
Ions
Electrons are transferred from one atom to another
Ionic bond
Electrons are shared between atoms
Covalent bond
Electrons are shared throughout the entire substance
Metallic bond
Octet rule
Atoms are stable(happy)when their outer energy level has eight electrons
Anything that has mass and takes up space
Matter
Rigid and usually has an organized structure high density
Solid
Fluid structure Adams can slide past each other easily take the shape of its container medium density
Liquid
Fluid structure atoms move freely completely fills its container lowest density
Gas
Simplest form of matter can’t be broken down by ordinary chemical means
Element
When two or more elements or compounds are chemically combined to form a new substance
Compounds
A substance made of two or more elements or compounds but it can be easily separated
Mixture
Smallest part of an element
Atom
Positively charged part of an atom
Protons
Neutrally charged no charge part of it the atom found in nucleus
Neutrons
Negatively charged part of an atom. These swarm aroubd the outside of the nucleus
Electrons
Number of protons in the atom this identifies atom
Atomic number
Equal to the number of protons plus neutrons in and Atom
Atomic mass
This is atom where the number of protons equal the number of electrons
Neutral atom
This is an atom where that has an equal number of protons and electrons these can be positive or negative
Ion
Form of an element that has a different amount of neutrons
Isotope
