Polarity
This property describes how strongly an atom attracts electrons in a bond.
What is electronegativity?
This number is known as Avogadro’s number.
What is 6.02 × 10²³?
This type of reaction occurs when one compound breaks apart into simpler substances.
What is a decomposition reaction?
These intermolecular forces are found in ALL molecules but are especially important in nonpolar molecules.
London Dispersion Forces
In the bond H–Br, which atom is partially negative?
What is Bromine (Br)?
What is the molar mass of CO2?
What is 44.01 g/mol?
Predict the product formed when calcium reacts with fluorine.
Show correct chemical formula
What is CaF₂?
Why does water generally have stronger intermolecular forces than methane (CH₄)?
Name specific forces
What is “water can hydrogen bond while methane only has London dispersion forces”?
A solution with a pH of 9 would be classified as this.
A base
In the molecule H₂O, which side of the molecule is slightly negative?
What is the oxygen side?
How many molecules are in 3 moles of H₂O?
What is 1.81 × 10²⁴ molecules?
What type of reaction occurs when silver nitrate reacts with sodium chloride to form silver chloride?
hat is a double replacement reaction?
Instrument that measures atmospheric pressure
What is "Barometer"
What happens to the pH of a solution when hydronium ion concentration increases?
Does it become more acidic or less?
The pH decreases and it becomes MORE acidic
Why is SO₂ polar while CO₂ is nonpolar even though both contain polar bonds?
What is “SO₂ is bent so the dipoles do not cancel, while CO₂ is linear so they do cancel”?
Why do chemists use the mole instead of directly counting atoms?
What is “atoms are too small and numerous to count individually”?
Balance the following equation:
Al + O₂ → Al₂O₃
4Al + 3O₂ → 2Al₂O₃?
A student claims that chlorine becomes partially negative in H–Cl because it has a higher electronegativity than hydrogen. Explain WHY this happens using electrons in your explanation.
Chlorine attracts the shared electrons more strongly, causing electrons to spend more time near chlorine and giving it a partial negative charge”
A sample contains 0.5 moles of CH₄ molecules. How many TOTAL atoms are present?
What is 1.51 × 10²⁴ atoms?
(0.5 mol × 5 atoms × 6.02 × 10²³)
Write the formula equation, predict the products, and determine whether the reaction occurs:
Copper reacts with magnesium chloride to produce....
Cu + MgCl₂ → No Reaction
As intermolecular forces become stronger, what generally happens to boiling point and why?
the boiling point increases because more energy is required to overcome the intermolecular forces holding molecules together.
This is where am unknown concentration is added to a known concentration to find the unknown
What is Titration?