Based on the kinetic molecular theory, which variable is directly proportional to the kinetic energy of gas molecules?

• Pressure

• Temperature

• Volume

• Moles

Match the following formulas with the correct name.

• Ideal Gas Law

• Pₜₒₜₐₗ= P₁ + P₂ + P₃ ...

• Boyle's Law

• M=n/V

• Dalton's Law of Partial Pressure

• PV = nRT

• Molarity

• M1V1 = M2V2

• Dilution Equation

• P1V1 = P2V2

Match the following examples as Exothermic or Endothermic

• exothermic

• melting ice

• exothermic

• cooking an omelet

• exothermic

• combustion of wood

• endothermic

• photosynthesis

• endothermic

• heat pack

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

The structure of the water molecule is shown in the image. Based on the image what kind of bonds are responsible for holding the water molecule together.

• polar covalent bonds

• hydrogen bonds

• ionic bonds

• non-polar covalent bonds

Why does table salt dissolve readily in water?

• Salt is a nonpolar molecule.

• Salt has large particle sizes that spread easily.

• Salt is a polar molecule.

• Salt easily forms ionic bonds with water.

What is the molarity of 8.65 mol of sodium carbonate in 2850 ml of solution?

• 0.038 M

• 3.04 M

• 4.32 M

• 2.85 M

What is the correct IUPAC name for the chemical compound H₂SO₄?

• Sulfurous acid

• Hydrosulfuric acid

• 
  Sulfuric acid

• Hydrosulfur acid

In 1923, Danish chemist Johannes Brønsted and English chemist Thomas Lowry independently proposed new definitions for acids and bases, ones that focus on proton transfer. A Brønsted-Lowry acid is any species that can donate a proton (H⁺) to another molecule. A Brønsted-Lowry base is any species that can accept a proton from another molecule. In short, a Brønsted-Lowry acid is a proton donor, while a Brønsted-Lowry base is a proton acceptor.

Based on the information provided of the Brønsted–Lowry definition of acids-base reaction, acids have the ability to-

• A. "donate" hydrogen ions

• B. “donate” hydroxide ions

• C. “accept” hydrogen ions

• D. “accept” hydroxide ions

The reading of a pH meter is a measure of —

• hydronium ion concentration

• lithium ion density

• magnesium ion radioactivity

• ammonium temperature

Which of the following is NOT a method of heat transfer?

• A. Conduction

• B. Convection

• C. Radiation

• D. Refraction

Tags

NGSS.MS-PS3-3