Endothermic & Exothermic Reactions

An exothermic reaction

• absorbs heat

• releases heat

• absorbs cold

• releases cold

Endothermic is a chemical reaction that

• releases energy

• absorbs energy

• expands energy

Is this reaction releasing heat energy or absorbing heat energy?

• releasing heat

• absorbing heat

What object is absorbing the heat energy in this picture (and going through a chemical change)?

• the frying pan

• the egg

• the air

What happened to the temperature in this reaction?

• it increased

• it decreased

Where did the thermal energy in this reaction come from?

• No where. It was created spontaneously.

• The air & table

• The stove

Is photosynthesis endothermic or exothermic?

• endothermic

• exothermic

Is melting wax endothermic or exothermic?

• exothermic

• endothermic

Is welding an exothermic or endothermic reaction?

• endothermic

• exothermic

Is drying clothes endothermic or exothermic? 

• endothermic

• exothermic