Periodic Trends
Elements in the periodic table are organized by this number.
What is atomic number?
NaCl is an example of what kind of compound?
What is ionic?
The law that states that matter cannot be created nor destroyed.
What is the law of conservation of matter?
The pressure of a gas increases as its temperature increases, assuming constant mass and volume.
What is Gay-Lussac's Law?
If you dilute 175 mL of a 1.6 M solution of LiCl to 1.0 L, determine the new concentration of the solution.
What is 0.28 M?
The element in the periodic table with 107 electrons.
What is Bohrium?
The chemical formula for aluminum hydroxide.
What is Al(OH)3?
In the chemical equation, 2H2(g) + O2(g), what is the coefficient?
What is 2?
The inversely proportional relationship between pressure and volume is described using this...
What is Boyle's Law?
In the equation below, which compound is the acid based on the Bronsted-Lowry theory?
NH3 + HCl ⇋ NH4 + Cl
What is HCl?
A proton has the atomic mass of what?
What is 1?
The name of the chemical compound with the formula NH3.
What is ammonia?
Balance the chemical equation below.
P4O10 + H2O → H3PO4.
What is P4O10 + 6 H2O → 4 H3PO4?
What is the pressure exerted by 2.3 mol of a gas with a temperature of 40. °C and a volume of 3.5 L?
Assuming the units for pressure are atm.
What is 16.9 atm.?
In the equation below, which compounds are the conjugate base pair based on the Bronsted-Lowry theory?
NH3 + HCl --> NH4 + Cl
What are NH3 and NH4?
The element with an atomic mass of 131.3.
What is Xenon?
The irreversible chemical reaction involving the rearrangement of the atoms of one or more substances and a change in their chemical properties or composition, resulting in the formation of at least one new substance.
What is chemical change?
Calculate the molar mass of Na₂CO₃.
What is 106 g/mol?
A 0.50 L container at 305 K holds a 0.22 g sample of carbon dioxide gas (CO2). Assuming ideal gas behavior, what is the pressure, in kilopascals, exerted by the gas?
What is 25 kPa?
A 0.001 M solution of HCl (hydrochloric acid).
Solve for the pH.
What is 3.00?
These types of elements are found in group 17 of the periodic table.
What are halogens?
The table below shows the electronegativities of four elements.
Element Electronegativity
Carbon 2.6
Fluorine 4.0
Hydrogen 2.2
Oxygen 3.4
Which of the following bonds is the most polar?
carbon–hydrogen
carbon–fluorine
fluorine–fluorine
hydrogen–oxygen
What is carbon-fluorine?
The chemical equation below represents sulfur trioxide (SO3) in the atmosphere mixing with rainwater to form sulfuric acid (H2SO4), which is a major component of acid rain.
SO3 (g) + H2O( l) → H2SO4 ( l)
The molar mass of SO3 is 80.1 g/mol and the molar mass of H2SO4 is 98.1 g/mol. How much H2SO4 is produced when 128.0 g of SO3 mixes with rainwater?
What is 157g?
At what temperature does 16.3 g of nitrogen gas have a pressure of 1.25atm in a 25.0 L tank?
What is 655 K or 418°C?
In an experiment, a student mixes two compounds, X and Y, which react to give off energy and form compound Z, as shown in the equilibrium equation below.
X + Y ⇋ Z + energy
After the reaction reaches equilibrium, which of the following changes would shift the equilibrium to the left?
What is increasing the temperature of the equilibrium?