pH Scale
States Of Matter
Atomic History
Balancing Chemical Equations
Everything
100
The pH scale ranges from
0-14
100
What are the states of matter
Solid, Liquid, Gas, and Plasma
100
Who was the first to propose the idea of atoms?
Democritus: 400 B.C.E.
100
H₂ + O₂ → 2H₂O
What type of reaction is this equation?
Synthesis
100
what is the difference between a cation and an anion?
The charge that cations have are positively charged ions, while anions are negatively charged ions.
200
True Or False: Hydronium is the ion that makes something more basic
False
200
In which state of matter are the particles closest together?
Solid
200
J.J. Thompsons model was made in 1904, what did he name this model?
The Plum Pudding Model
200
_CH4 + _O2 → _CO2 + _H2O
CH4 + 2 O2 → CO2 + 2 H2O
200
Assigning Oxidation Numbers:
Al²O³
Al: 3
O: -2
Al²: 6
O³: -6
300
What color does red litmus paper turn in basic solutions?
Blue
300
What happens to the particles of a substance when it undergoes melting?
A. The particles move closer together. B. The particles move farther apart. C. The particles remain in the same position. D. The particles lose energy.
B. The particles move farther apart.
300
What did JJ Thompson discover?
Electrons
300
_ Ag + _ Cl2 → _ AgCl
2 Ag + Cl2 → 2 AgCl
300
What is the sum of all the oxidation states of neutral a compound?
0 - Zero
400
What is the chemical reaction of the products: 8H3O+12OH+Another Product
Basic
400
What sate of matter is fire?
Primarily a gas, but weakly plasma.
(Gas is an acceptable answer)👍
400
______ said that everything in the universe is made up of tiny particles called atoms.
A. Democritus B. Dalton C. Copernicus D. Aristotle
A. Democritus
400
___ SnO₂ + ___ H₂ → ___ Sn + ___ H₂O
SnO₂ + 2 H₂ → Sn + 2 H₂O
400
What happens when wood burns, is it a physical or chemical change?
It is a chemical change because it creates a new substance (which is ash).
500
Battery Acid-0, Orange Juice-3, Stomach acid-1, or Water-7
Based on the items listed above what is the strongest acid on the scale?
Battery acid-0
500
Which state of matter has a fit volume but not an exact shape?
Liquid
500
Whose model is this?
A. Niels Bohr B. Erwin Schrodinger C. John Dalton
A. Niels Bohr
500
What type of reaction is this?
AB+CD→AD+CB
Double Replacement Reaction
500
During redox reactions, what is the charge of oxygen when it is out of its natural state?
A. 0
B. +2
C. -2
D. -1
C. -2