Definitions
What is matter
What was Dalton's atomic theory
I. Atoms of a given element are identical
II. Atoms are indestructible
III. Atoms combine in simple ratios to form compounds IV. Atoms are neither created nor destroyed in chemical changes
H
Hydrogen, a nonmetal
Lithium (Li)
Alkali metals
What happens if you change the numbers of protons
You change the element
What is Chemistry
the study of how matter behaves by studying what atoms and molecules do
What scientist proposed the idea of electrons
J.J. Thomson
B
Boron, a metalloid
Xenon (Xe)
Noble gases
What happen if you change the amount of electrons
You get an ion
What is a Law
A law is an observable relationship between two values
Who made the nuclear atom model
Ernest Rutherford
K
Potassium, Metal
Fluorine (F)
Halogen
What happens when you change the amount of neutrons
You get an isotope
What is a Theory
An explanation to explain why the relationship exists
What scientist said that electrons have a negative charge
Robert Millikan
W
Tungsten, metal
Iron (Fe)
Transitional metals
Which as the same number of electrons as N-3
A. Ne
B. Al+3
C. O-2
What is a Hypothesis
An explanation that is not yet supported by a lot of evidence
Who came up with the idea of atoms first, Dalton or Democritus
Democritus
V
Vanadium, a metal
This is worth 1000
Uranium (U)
Actinides
Can an element have 0 neutrons and if can which element has it naturally
Yes, Hydrogen