AP Chem Unit 0 Review

What is the density of water at 4°C?

• 0.5 g/mL

• 1 g/mL

• 1.5 g/mL

• 2 g/mL

Tags

NGSS.HS-ESS2-5

What is the formula for converting Kelvin to Celsius?

• °C = K + 273

• °C = K - 273

• °C = K * 273

• °C = K / 273

What is an isotope?

• A variant of a chemical element with the same number of protons and a different number of neutrons.

• A type of chemical bond between two elements.

• An element that has lost or gained electrons.

• A molecule that contains two or more different elements.

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-8

How do you convert Celsius to Kelvin?

• K = °C + 273

• K = °C - 273

• K = °C * 273

• K = °C / 273

What is the atomic number of an element?

• The number of neutrons in the nucleus of an atom.

• The number of protons in the nucleus of an atom.

• The total number of electrons in an atom.

• The mass number of an atom.

How many significant figures are in the number 0.020 m?

• 1

• 2

• 3

• 4

What is the pH scale used for?

• To measure the temperature of a solution.

• To measure the acidity or basicity of a solution.

• To determine the density of a solution.

• To measure the volume of a solution.

What is the purpose of a chemical equation?

• A chemical equation represents a chemical reaction, showing the reactants and products.

• A chemical equation is used to balance the number of atoms in a molecule.

• A chemical equation describes the physical state of a substance.

• A chemical equation indicates the temperature at which a reaction occurs.

How many significant figures are in 350 mL?

• 1

• 2

• 3

• 4

What family of elements does lithium belong to?

• Alkali metals

• Noble gases

• Halogens

• Transition metals

Tags

NGSS.HS-PS1-1