Atomic Structure
Es, Cs & Ms
Changes
Atomic Mass
Phases of Matter
100
Sub-atomic particle that carries a positive charge
Proton
100
Pure argon gas is made of a single type of atom. This is an example of a(n) _________?
Element
100
Chopping wood is an example of what kind of change?
physical
100
The mass of a proton
1 amu
100
The phase of matter with the slowest moving particles
solid
200
Sub-Atomic particle that has a neutral (no) charge
Neutron
200
Two substances found together that are not chemically bound together
Mixture
200
The type of change where no new substances are made
Chemical
200
The mass of a neutron
1 amu
200
The phase of matter that takes the shape of its container
Liquid
300
Sub-Atomic particle with a negative change
Electron
300
Salt is made of sodium (Na) chemically bound with chlorine (Cl). It is an example of
a compound
300
Changing water into oxygen and hydrogen is an example of what kind of change?
Chemical
300
Mass of an electron
~0 amu
300
The most dense phase of matter
Solid
400
What sub-atomic particle is NOT found in the nucleus of an atom?
electron
400
Saltwater is a mixture of ____________
compounds
400
Burning a candle (melting wax and igniting the wick) is what kind of change?
Wax = physical Wick = chemical
400
Virtually 100% of the mass of an atom is found in the ________?
Nucleus
400
The phase of matter with the fastest moving particles
Gas
500
What sub-atomic particle defines an element?
Proton
500
Air is a mixture of nitrogen (N), oxygen (O) and other types of
elements
500
Melting steel is what kind of change?
Physical
500
A hydrogen atom with an atomic mass of 1 has how many neutrons?
Zero!
500
The phase of matter that can change its volume
Gas
M
e
n
u