Elements
Atoms
Formulas
Units and Conversions
Random
100
What is the symbol for hydrogen?
H
100
What subatomic particle has a positive charge?
protons
100
What is the slope-intercept formula?
y = mx+b
100
1 cm3 = ___ cc?
1
100
Is salt water a homogeneous or heterogeneous mixture?
Homogeneous, the mixture has a uniform composition
200
What element is F?
Fluorine
200
What is the definition of atomic mass unit (amu)?
1/12 the mass of a Carbon-12 atom
200
Density = ?
mass divided by volume
200
What is the density of water at room temperature?
1.000 g/cm3
200
Where are metals located on the periodic table?
The center of the periodic table
300
What elements are liquid at room temperature?
Bromine and Mercury
300
How many neutrons are in Carbon-13?
7 neutrons
300
How do you convert Kelvin to Celcius?
Celcius = K - 273.15
300
Convert 3 mm to nm.
3 x 106 nm
300
What is the Law of Conservation of Mass?
During a chemical reaction, the total mass of the products must be equal to the total mass of the reactants.
400
What is the mass number for deutirium?
2
400
What is the difference between an isotope and an ion?
Isotopes vary in neutrons
Ions vary in electrons
400
What is the percent error formula?
400
Is mL a base unit or a derived unit?
Derived Unit: mL = cm3
400
What SI unit is used to measure electric current?
Ampere, A
500
What are the 7 diatomic elements?
Br I N Cl H O F
500
What are the 4 principles of Dalton's Atomic Theory of Matter?
1) All matter is made of atoms
2) Atoms of a given element are identical
3) Atoms combine in whole-number ratios to form compounds
4) Chemical reactions are rearrangements of atoms500
What is the formula for standard deviation?
500
How many significant figures in the conversion:
1 L = 1000 mL?
Infinite, since conversions are counting numbers
500
What are the significant figure calculation rules for multiplication/division AND addition/subtraction?
Multiplication/Division: round to the lowest number of significant figures
Addition/Subtraction: round to the lowest decimal place