Chemistry Vocabulary
A process in which one or more substances changes into a one or more new substances
Chemical Reaction
Fe2O3
How many Iron atoms?
2
C + O2 -> CO2
Synthesis
H2O -- > H2 + O
Yes
3 --> 3
Which is NOT a property of a substance?
A. Hardness
B. Shape
C. Melting Point
D. Solubility
B. Shape
Starting materials in a chemical reaction. They are to the left of the arrow in a chemical formula
reactant
C6H12O6
How many total atoms in this molecule?
24 atoms
AgBr2 -> Ag + Br2
Decomposition
2Na + Cl2 --> 2NaCl
Yes
4 --> 4
Which is NOT a sign of a chemical reaction
a. Change in color
b. Bubbling/Fizzing
c. Change of length
d. Increase in temperature
C. Change of length
Ending materials in a chemical reaction. They are to the right in a chemical formula
Product
3CO2 + 2H2O
How many Oxygen atoms total?
8
CuBr2 + AlCl3 --> CuCl3 + AlBr2
Double Replacement
Fe2O3 + C --> Fe + 3CO2
No
6 --> 10
(Fe-2; O-3; C-1 --> Fe-1; C-3; 0-6)
What was a the highest mineral on Moh's Hardness scale
Diamond
Two part answer-must be given in the correct order:
1. A type of reaction that releases heat; temperatures increase
2. A type of reaction that absorbs heat; temperatures decrease
1. Exothermic
2. Endothermic
Fe2(SO4)3 + 6KOH
How many Hydrogen atoms total?
6
Zn + HCl --> ZnCl + H
Single Replacement
6CO2 + 6H2O --> C6H12O6 + 6O2
Yes
36 -- > 36
C-6; O-18; H-12 --> C-6; O-18; H-12
True or False:
The Solute is the substances that dissolves (usually the solid)
The Solvent is the substance that does the dissolving (usually the liquid)
True
A new solid that forms as the result of a chemical reaction. This solid cannot be dissolved. Soap scum is an example
Precipitate
Fe2(SO4)3 + 6KOH
How many Oxygen atoms total?
18
Ni2O3 --> Ni2 + O3
Decomposition
4NH3 + 3O2 --> 4NO + 6H2O
No
22 --> 26
(N-4; H-12-O-6 --> N-4; O-10- H-12)
Find the Density of a piece of Copper
Mass = 44.8 g
Length= 1.7 cm
Volume= 5 cm3
Density= 8.96 g/cm3