2.4 Chemical Reactions/Activation Energy

Fill in the Blank

In a chemical reaction, only the atoms present in the ________ can end up in the products. (USE LOWER CASE LETTERS)

Multiple Choice

In this image, the symbol to the right of the arrow (in black) are called _______.

• Products

• Reactants

• Subscripts

• Coefficients

Multiple Choice

In a chemical equation the reactants are on the left side of the arrow. Are the reactants the beginning substances or the ending substances?

• beginning

• ending

Multiple Choice

In this image, what are the information to the right of the arrow (in black) is called the_______.

• Product
• Reactant
• Chemical Subscript

Open Ended

In which part of a chemical reaction do bonds break?

Multiple Choice

The amount of energy needed to start a chemical reaction.

This is significantly lowered by enzymes, speeding up chemical reactions so life can exist.

• Induction Energy

• Products

• Active Site

• Activation Energy

Multiple Choice

_____ reactions require an input of energy and _____ reactions release energy.

• Endothermic; Endergonic
• Exothermic; Exergonic
• Endergonic; Exergonic
• Exergonic; Endergonic
• Exothermic; Endothermic

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident