CP Chem Midterm Review Fall 2020

Which is a unit of mass?

• centimeter

• liter

• kilogram

• Kelvin

Which is a unit of density?

• g/mL

• ml/g

• cm³/ml³

• g/ml³

Convert 27.23 kg to mg:

1 kg= 1000 g

1000 mg = 1 g

• 2.723 X 10⁷

• 2.723 X 10³

• 2.723 X 10²

• 2.723 X 10⁶

Which is true about mass of subatomic particles:

• protons and electrons both have a mass of 1 amu and neutrons have a mass of 0 amu.

• protons and neutrons both have a mass of 0 amu and electrons have a mass of 1 amu

• protons and neutrons both have a mass of 1 amu and electrons have a mass of 0 amu

• protons, neutrons, and electrons each have a mass of 1 amu

Overall atoms have a neutral charge because:

• protons = neutrons

• neutrons = protons

• protons=electrons

• electrons = neutrons

In which phase of matter are the particles moving the fastest and the most far apart?

• solid

• liquid

• gas

• they are the same speed and distance in all phases

What is the formula when copper (I) combines with chlorine?

• CuCl

• CuCl₂

• Cu₂Cl

• Cu₂Cl₃

Which state of matter has a definite volume, but not a definite shape?

• solid

• liquid

• gas

• none

The mass of the reactants is always equal to the mass of the products is a statement of:

• Hund's Rule

• The Law of Conservation of Mass

• Kinetic Molecular Theory

• Quantum Mechanical Model

How many energy levels does K have?

• 1

• 2

• 3

• 4