
Hand Warmer Solution Concepts

Interactive Video
•
Chemistry, Science, Physics
•
9th - 10th Grade
•
Hard

Patricia Brown
FREE Resource
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What do the yellow circles in the beaker drawings represent?
Water molecules
Dirt particles
Crystals
Air bubbles
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of 'mole dollars' in the classroom activity?
To earn bonus points on a test
To pay for field trips
To exchange for school supplies
To buy snacks
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you visually distinguish between unsaturated and supersaturated solutions?
By the presence of crystals
By the color of the solution
By the temperature of the solution
By the smell of the solution
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens when a crystal is added to a saturated solution?
It evaporates
It remains undissolved
It dissolves completely
It changes color
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the main component of the hand warmer solution?
Sodium acetate
Magnesium sulfate
Calcium carbonate
Sodium chloride
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What action is equivalent to adding a crystal in the hand warmer experiment?
Heating the hand warmer
Shaking the hand warmer
Cooling the hand warmer
Flexing the metal disc
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the hand warmer solution when it is placed in boiling water?
It remains unchanged
It becomes a gas
It becomes unsaturated
It becomes a solid
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