Periodic Table
States of Matter
Chemistry Math
Stoichiometry and Chemical Reactions
Bonding and Molecular Geometry
100
According to the periodic table symbol, a neutral Chlorine atom has this many electrons.
What is 17?
100
In a mixture, the ______ is the component of lesser amount.
What is the solute?
100
The number of significant figures in the measurement 0.00789 L.
What is 3?
100
A chemical reaction that absorbs energy in the form of heat is considered _____.
What is endothermic?
100
A ______ bond is a chemical bond formed by the sharing of a pair of electrons.
What is a covalent bond?
200
The charge Bromine would have as an ion.
What is -1?
200
Charles’s law relates the volume and temperature of a gas at a constant pressure. According to Charles’s Law, cooling a sample of gas will cause its volume to _________.
What is decrease?
200
Convert 10km to mm.
What is 10,000,000 mm?
200
A ______ reaction is when a reaction produces one or more insoluble products.
What is a precipitation reaction?
200
A type of covalent bond that results from the direct (head-on) overlap of two orbitals is called a ___________.
What is a sigma bond?
300
The number of neutrons magnesium has according to this nuclide symbol
What is 12?
300
A gas mixture used for anesthesia contains 2.83 mol oxygen, O2, and 8.41 mol nitrous oxide, N2O. The total pressure of the mixture is 192 kPa. This is the partial pressure of N2O
What is 144 kPa?
300
Express 345,000 in scientific notation.
What is 3.45 x 10 5 ?
300
The acid in the following equation
HCl (aq) + H2O (l) ⟶ Cl− (aq) + H3O+ (aq)
What is HCl?
300
The polarity of this molecule
What is nonpolar?
400
_____ is an alkali metal in the same period as Krypton.
What is potassium, K ?
400
If the specific heat of water is 4.18 J/(gC), this is the heat absorbed by 10g of water to raise its temperature by 5 degrees Celsius.
What is 209 J ?
400
The number of moles in 1kg of water (answer in 3 sig figs)
What is 55.5 moles?
400
Balance the following equation:
C3H8 + O2 → CO2 + H2O
What is
C3H8 + 5O2 → 3CO2 + 4H2O
400
This many pi bonds are in the molecule
What is two?
500
Between oxygen and phosphorus, this element has a greater atomic radius
What is phosphorus?
500
Prepare a 10 L working solution of 1.0 M HCl using a stock of concentration 20M HCl. This is much stock you use.
What is 0.5 L?
500
A radiographic device used in a dentist's office emits an X-ray. If this X-ray has a wavelength of 2.090 × 10−11 m. This is the frequency of this X-ray.
What is 1.435 x 1019 s-1
500
These products (include state symbols and balance) would be produced in the following reaction
NaCl (aq) + AgNO3 (aq)⟶
What are
AgCl (s) + NaNO3 (aq)
500
The hybridization of the central atom in this molecule
What is sp3?