Chemistry Quiz: Elements, Compounds, and Reactions

What is the definition of a compound?

• A substance made up of two or more elements chemically bonded together

• A substance made up of only one type of atom

• A substance that cannot be broken down into simpler substances

• A substance that has a definite shape and volume

Which type of bond involves a transfer of electrons between metals and nonmetals?

• Ionic bond

• Covalent bond

• Metallic bond

• Hydrogen bond

What is the law of conservation of mass?

• Mass is neither created nor destroyed in a nonnuclear reaction

• Mass is created during a chemical reaction

• Mass is destroyed during a chemical reaction

• Mass is conserved only in nuclear reactions

What type of reaction occurs when a compound breaks up into its parts?

• Decomposition reaction

• Combination reaction

• Single-replacement reaction

• Double-replacement reaction

What is the molar mass of an element?

• The mass of 1 mole of the element in grams

• The number of atoms in 1 mole of the element

• The volume of 1 mole of the element in liters

• The charge of 1 mole of the element in coulombs

Which type of bond involves a sharing of electrons between two nonmetals?

• Covalent bond

• Ionic bond

• Metallic bond

• Hydrogen bond

What is the purpose of coefficients in a balanced chemical equation?

• To indicate the number of atoms, molecules, or formula units in a reaction

• To indicate the charge of each element in a compound

• To indicate the state of matter of each substance in a reaction

• To indicate the temperature at which the reaction occurs

What is the relationship between moles and Avogadro's number?

• 1 mole is equal to 6.02 x 10^23 particles

• 1 mole is equal to 6.02 x 10^23 grams

• 1 mole is equal to 6.02 x 10^23 liters

• 1 mole is equal to 6.02 x 10^23 moles

Which type of reaction involves two ionic compounds switching cations?

• Double-replacement reaction

• Combination reaction

• Decomposition reaction

• Single-replacement reaction

What is the purpose of stoichiometry in chemistry?

• To calculate the amount of reactants and products in a chemical reaction

• To determine the physical properties of elements and compounds

• To study the behavior of electrons in atoms and molecules

• To analyze the structure of crystals and minerals