Exothermic and Endothermic Reactions

If a chemical reaction is ENDOTHERMIC, the temperature would....

• Stay the same

• Increase

• Decrease

In an endothermic reaction the system is releasing energy.

• True
• False

During an endothermic reaction in a beaker if we are part of the surroundings and touched the beaker, it would feel _______. 

• Warm
• Cold

A student mixed two chemicals to allow them to react. The temperature before the reaction was 25 ° C. The temperature after the reaction was 18° C. Which of the following is/are true?

• The temperature changed

• It is an endothermic reaction

• It is an exothermic reaction

• Two of the answers are correct

What type of reaction is shown in the photo?

• Exothermic
• Isothermic
• Endothermic
• None of the  above

What type of reaction occurs in a hand warmer?

• exothermic

• endothermic

Have you ever eaten sherbet sweets candy? They fizz in your mouth and your tongue feels cold. What is causing the cooling sensation on your tongue?

• It is an exothermic reaction

• It is an endothermic reaction

• It is made of ice

• It is dissolving your mouth

Which of the following is an example of an exothermic reaction?

• Candle was melting

• A puddle evaporating

• Dry ice (solid carbon dioxide) subliming to form gaseous carbon dioxide

• Water freezing to form ice

What piece of equipment would you use to determine if a chemical reaction was endothermic or exothermic?

• triple beam balance

• ruler

• thermometer

• a wood splint

After you mix two substances together, a new substance forms.  This is an example of:
 

•  Physical Change
•  Chemical Change