Endothermic & Exothermic

What is an endothermic reaction

• A reaction where energy is realesed to its

• A reaction where energy is absorbed from its surroundings

Tags

NGSS.HS-PS1-4

What is an exothermic reaction

• A reaction where energy is released to its surroundings
• A reaction where energy is absorbed from its surroundings 

Tags

NGSS.HS-PS1-4

What is involved in a chemical reaction

• The breaking of chemical bonds in the product
• The breaking of chemical bonds in the reactant
• The forming of chemical bonds in the reactant

Tags

NGSS.HS-PS1-4

Is energy created during an exothermic reaction

• Yes 
• No
• Sometimes
• Most times 

Tags

NGSS.HS-PS1-4

Is the combustion of propane endothermic or exothermic

• Endothermic
• Exothermic

Tags

NGSS.HS-PS1-4

This graph is an energy diagram for a chemical reaction. Which is true of this type of reaction?

• More energy is required to break reactant bonds than is released when product bonds form

• Less energy is required to break reactant bonds than is released when product bonds form

• The bonds of the reactants do not require energy to break because the reaction releases energy

Tags

NGSS.HS-PS1-4

What type of reactions require energy in order to start?

• neither endothermic nor exothermic reactions
• endothermic reactions only
• exothermic reactions only
• both endothermic and exothermic reactions

Tags

NGSS.HS-PS1-4

What is the activation energy?

• The energy of the products
• The energy of the reactants
• The minimum energy needed by the reactants to form the products.
• The energy lost in the reaction

Tags

NGSS.HS-PS1-4

Breaking bonds

• Endothermic
• Exothermic

Tags

NGSS.HS-PS1-4

Forming bonds

• Endothermic
• Exothermic

Tags

NGSS.HS-PS1-4