[DOC] [TLE] Atomic number, atomic mass, and isotopes | Elements and atoms ... [PAR] Radioactive atoms have unstable nuclei, and they will eventually release ... 
Forms of the same atom that differ only in their number of neutrons are called 
isotopes. ... is simply its total mass and is typically expressed in atomic mass units 
or amu. ... relative atomic masssometimes called the atomic weightfor an 
element. [DOC] [TLE] Questions and Answers - How do I find the number of protons ... [PAR] How many protons, electrons and neutrons are in an atom of krypton, carbon ... 
Use the Table of Elements to find your element's atomic number and atomic 
weight. ... removing electrons from an atom does not change which element it is, 
just its ... The atomic weight is basically a measurement of the total number of 
particles... [DOC] [TLE] Elements and Atoms - Kimball's Biology Pages [PAR] Each number represents the percent of the total number of atoms present. ... 
Living matter ... There is still some uncertainty about the exact number of 
elements required by living ... Neutrons have the same weight as protons but no 
electrical charge. .... Instead they achieve a stable configuration by sharing their 
outermost... [DOC] [TLE] The How and Why of Mols - garlikov [PAR] It will "turn out" that it is the same number of atoms needed to make up 16 ... ratio 
of the number of atoms of an element (or molecules in a compound) to their 
weights. ... the same things in all elements, and since they supposedly weigh the 
same ... weight or mass of any other proton or of any neutron, no matter what 
element... [DOC] [TLE] Elements and Atoms: The Building Blocks of Matter [PAR] An object's mass and its weight are related concepts, but not quite the same. ... 
An atom's neutrons have no charge: they are electrically neutral. ... has six 
neutrons as well as six protons, for a total of 12 subatomic particles in its nucleus. [DOC] [TLE] Chem4Kids.com: Atoms: Neutrons [PAR] Other sections include matter, elements, the periodic table, reactions, and ... 
Neutron numbers are able to change the mass of atoms, because they weigh 
about as ... A normal hydrogen (H) atom does not have any neutrons in its tiny 
nucleus. [DOC] [TLE] atomic mass facts, information, pictures | Encyclopedia.com articles ... [PAR] On the other hand, they may be presented as numbers without any unit of .... as 
Dalton had stated, the fundamental particles of matter must be incredibly tiny; ... a 
table of atomic weights, listing 54 elements along with their weight relative to that 
of .... of the chemical symbol indicates the total number of protons and neutrons. [DOC] [TLE] Atomic theory: atoms, elements, nucleus - Chem1 [PAR] May 13, 2016 ... He called these "basic matter particles" in other words, atoms. ... Elements and 
atoms (Khan, 13 min) Not one of their best, but still useful. .... the relative mass of 
each element in a compound must always be the same. .... especially important 
so much so that they have names and symbols of their own:. [DOC] [TLE] the mass spectra of elements - Chemguide [PAR] Monatomic elements include all those except for things like chlorine, Cl2, ... The 
two peaks in the mass spectrum shows that there are 2 isotopes of ... Notes: 
Isotopes are atoms of the same element (and so with the same number of protons
), ... Most people don't get in a sweat over this, and just use the numbers as they 
are! [DOC] [TLE] Overview of Atomic Structure - Boundless [PAR] Atoms are made up of particles called protons, neutrons, and electrons, which 
are ... Protons and neutrons have approximately the same mass, about 1.67  10-
24 ... of matter which still retains its identity as a chemical element, consisting of a 
... Therefore, they do not contribute much to an element's overall atomic mass. [DOC] [TLE] Does the molecular weight of an element depend on its state of ... [PAR] The atomic mass of the element will not change. However,

Question: No matter what element they are in, they weigh the same & their total is an element's atomic number
Answer: protons