Final Exam Review: Basics of Reactions

The substances listed on the right side of a chemical equation are the

• Yields
• Reactants
• Products
• Precipitates

The substances listed on the left side of a chemical equation are the

• Products
• Coefficients
• Precipitates
• Reactants

In chemical reactions, what does the principle of conservation of mass mean?

• Matter is not created or destroyed.
• The total mass of the reactants is greater than the total mass of the products.
• The total mass of the reactants is less than the total mass of the products.
• Matter is not changed.
  

How many Oxygen (O) atoms are in 2 C₂HO₈C_l2

• 2
• 16
• 8
• 5

How many Hydrogen (H) atoms are in NH₃OH

• 3
• 4
• 5
• 1

A molecule is________

• the smallest unit of matter

• smaller than an atom
• made of electrons

• more than one atom bonded together

Which is the Law of Conservation of Matter?

• matter cannot be created or destroyed, it only changes form
• matter can be created but it cannot be destroyed, it never changes form
• matter can be destroyed but it cannot be created, it usually just changes form
• matter is an unproven theory created by Hans Geiger

How many molecules are in the following formula? 3 C₂H₆

• 3
• 6
• 12
• 18

How many different elements are in the formula C₆H₁₂O₆?

• 1
• 2
• 3
• 4

How many Sodium (Na) atoms are in 6 NaCl?

• 1
• 12
• 6