Atoms Flashcards
What happens in melting and boiling points of pure substances?
They become fixed
Relative charge of a proton
+1
Relative charge of a nuetron
0
Relative charge of an electron
-1
Relative mass of a proton
1
Relative mass of a neutron
1
Relative mass of an electron
0.0005
What is meant by the term compound?
Two or more different atoms which are chemically bonded together
What should i include when there is a graph with a fixed temperature?
That the temperature remains steady and comsistent
How do you calculate the relative formula mass?
For example, H2O
2 (1) +16 = 18
What is the triangle to remember how to calculate the moles, mass or relative mass?
. Mass
————————– Mole M.R.
Moles X Relative mass
Define the term mole
A unit to measure the amount of any substance
What is avogadros number
6.02 x 10^23