Cold Pack Engineering

Complete the claim: The temperature in the pack changed because when the ​ (a)   combined a chemical ​ (b)   occurred. Energy was ​ (c)   , making the pack feel ​ (d)   .

• reactants
• reaction
• absorbed
• colder
• products
• released
• hotter

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

When atoms come together to form a chemical bond ________

• Energy is released into the surroundings

• Energy is used up and then no longer exists

• Energy is absorbed from the surroundings

• Energy is created that did not previously exist

Tags

NGSS.HS-PS1-4

A chemical reaction in which more energy is absorbed than is released is endothermic.

• True

• False

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Energy is needed to break bonds in chemical reactions

• True

• False

Tags

NGSS.HS-PS1-4

Exothermic reactions ________

• Absorb more energy than they release

• Release more energy than they absorb

• Release and absorb exactly the same amount of energy

• Can either release more energy than they absorb, or absorb more energy than they release, depending on the reaction.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Fill in the blanks to provide evidence of temperature change in your cold pack. The temperature ​ (a)   , which means that energy was ​ (b)   . This is an example of an ​ (c)   reaction.

• decreased
• absorbed
• endothermic
• released
• increased
• colder
• hotter
• exothermic

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

What was the temperature change in your cold pack? Include a plus or minus sign and then the number only; do not include units or words. (ex. -10 or +2)

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which reasoning did you choose in your slideshow?

• Choice 1

  (green slide)

• Choice 2

  (yellow slide)

• Choice 3

  (pink slide)

Tags

NGSS.MS-ETS1-2

NGSS.MS-PS2-4

NGSS.MS-PS3-5

Choose the image that best represents your cold pack.

• 
• 

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Choose the image that best represents your cold pack.

• 
• 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS1-6

NGSS.MS-PS3-3