Chemical Reactions

What kind of reaction is shown in the picture

• Endothermic
• Exothermic
• Explosive
• Boring

_________________ are the elements and compounds that enter into a chemical reaction.

• Polymers
• Bonds
• Reactants
• Products

The energy needed to start a chemical reaction is the _____________________.

• Activation Energy
• Products
• Reactants
• Enzymes

_______________ can speed up the rate of reactions and/or lower the amount of energy needed for
the reaction to take place.

• Carbohydrates
• Fuel source
• Chemical
• Catalyst

Enzymes are _____________________.

• Carbohydrates
• Lipids
• Proteins
• Nucleic Acids

Enzymes work by lowering the _______________________ for chemical reactions.

• Products
• Solutes
• Activation Energy
• Reactants

___________________ are the elements are compounds that leave (are formed in) a chemical
reaction.

• Polymers
• Bonds
• Reactants
• Products

Chemical reactions that release energy are known as ________________________.

• Endothermic
• Exothermic
• Boring
• Reactions

Chemical reactions that absorb energy are known as ________________________.

• Endothermic
• Exothermic
• Boring
• Explosive

 In the formula: C + O2  CO2, CO2 is the ____________________.

• Products
• Solution
• Answer
• Reactants