Reactions and Stoichiometry Quiz

What is the primary focus of the video series by Leah from leah4sci.com?

• Biology

• Physics

• Reactions and Stoichiometry

• Organic Chemistry

Which of the following is the smallest whole particle of matter?

• Electron

• Proton

• Atom

• Molecule

What is the difference between an element and a compound?

• Elements are made of different types of atoms, compounds are made of the same type.

• Elements are always metals, compounds are always non-metals.

• Elements are made of the same type of atom, compounds are made of different types.

• Elements are always gases, compounds are always solids.

What type of bond involves the sharing of electrons between atoms?

• Hydrogen bond

• Metallic bond

• Covalent bond

• Ionic bond

Which of the following is an example of a polar covalent bond?

• Water (H2O)

• Sodium chloride (NaCl)

• Methane (CH4)

• Oxygen (O2)

What does Avogadro's number represent?

• The number of atoms in a molecule

• The number of molecules in a mole

• The number of electrons in a covalent bond

• The number of protons in an atom

What is the empirical formula of glucose (C6H12O6)?

• C2H4O2

• C3H6O3

• CH2O

• C6H12O6

In a chemical reaction, what is the term for the starting substances?

• Products

• Inhibitors

• Reactants

• Catalysts

What is the term for the reactant that gets completely used up in a reaction?

• Excess reactant

• Limiting reactant

• Catalyst

• Product

How is percent yield calculated in a chemical reaction?

• Theoretical yield minus actual yield

• Actual yield plus theoretical yield

• Theoretical yield divided by actual yield

• Actual yield divided by theoretical yield