WorksheetsEndo or Exo?
Total questions: 19
Worksheet time: 19mins
A lizard egg needs a temperature between 26-30 ° C to hatch properly. You place it next to a pouch of water which is 22 °C. What type of chemical do you need to add to the water for the egg to hatch? HINT: Think of the lab you did in class on 1/8.
Calcium chloride because it will be endothermic.
Calcium chloride because it will be exothermic.
What type of reaction occurs in an instant hand warmer?
Release light
Absorb light
Baking bread and cooking an egg are examples of ____ reactions. (Remember- heat from the pan or oven goes into the raw egg or dough.)
Endothermic
Exothermic
You may have never eaten sherbet sweets candy, but they fizz in your mouth and end up making your tongue feel cold. Why do you think that is?
An exothermic reaction occurs.
An endothermic reaction occurs.
They're made of ice.
They dissolve in your mouth.
Alka-seltzer tablets dropped in water feel cool. This is an example of an ___ reaction.
Endothermic
Exothermic
Physical change
Exo means out or ________.
absorbed
released
Endo means in or _______.
absorbed
released
What instrument would you use to detect an endothermic or exothermic reaction?
triple beam balance
ruler
thermometer
graduated cylinder
____ reactions usually feel cold.
endothermic
exothermic
_____ reactions usually feel hot!
endothermic
exothermic
