Atom Basics Flashcards
(19 cards)
Atom
The smallest bit of matter that still has the these properties
Models
Representations of things that we can understand
Subatomic particles
The things that make up atoms
Neutrons
0, 1amu, in, N•
Proton
+1eV, 1amu, in, p+
Electrons
-1eV, ~0, out, e-
Ion
Charged particles
Cations va anions
Positive negative
Atomic number
Number of protons and defines the element
Atomic mass
Mass number, add protons and neutrons
Isotope
Same element different mass (same proton different neutron)
How models of somewhat incorrect
None of them fully show atomic behaviors and interactions
Charge
Atomic number subtract electrons
Pure
How many types of atoms
1= element
2= compound
Not pure
Can you see the different parts
Can’t= homogenous
Can= heterogeneous
Physical properties
color, texture, state of matter, mass, volume, temp, malleability
how something is
measure without altering
Chemical properties
smell, reaction, flammability, acidity, toxicity
can measure without altering
how something can react
ability to change
Physical change
changes but same substances: cutting, change in state of matter, its shape
Chemical change
new substance is made: eating/digesting stuff, burning, stuff, usually changed color
