Winter Warm-Up

Winter Warm-Up

​The Science of Handwarmers & Ice Packs

Open Ended

Question of the Day:

In 1-2 full sentences, what is the difference between endothermic vs. exothermic reactions?

How do handwarmers work?

Turn & Talk with your group then record any scientific observations & questions you now wonder.

Then, draw a model of a prediction of how you think a ​handwarmer works.

Predictions

With your table, OPEN your handwarmer packaging.


Observe what happens over the course of a few minutes.

Turn and Talk, then record your observations/questions.

​

Try It Out!

​What do you think you could do to make it feel warmer?

Open Ended

What happened after you opened the handwarmer?

Poll

Make a prediction:

Shaking a handwarmer makes it warm up faster/get hotter.

• Yes

• No

What's inside?

Mrs. Romano and Mrs. Vena will come around the cut open the handwarmer.

DO NOT TOUCH THE CONTENTS WITH YOUR HANDS.

Turn and Talk, then record your observations/questions.

Click on the link below to access the article, "Winter Warm Up"

Open Ended

Handwarmers are an example of a ________ reaction.

Open Ended

TURN & TALK :

First discuss with your elbow partner, then each partner should record their own answer.

Why are handwarmers exothermic?

​What is Rust?

Open Ended

Based on observations and evidence from the text, explain, how do handwarmers work?

Open Ended

Why would holding a handwarmer or placing it in your glove help it warm up faster?

What's inside?

Look again at the contents of the handwarmer.

DO NOT TOUCH THE CONTENTS WITH YOUR HANDS.

Record any additional observations/questions.

How can we visually demonstrate what we observed today?

Draw your finalized models for both the handwarmer.

How do Instant Ice Packs work?

Open Ended

Make a prediction, what kind of reaction occurs when you use an instant ice pack?

Pass around the instant ice pack, what do you feel?

Turn and Talk and record your observations.

​

Try It Out!

How do we activate the ice pack?

Now that it has been broken open, how does it feel?

​

Try It Out!

​Turn and Talk about your observations.

Open Ended

What do you think is happening inside of the ice pack?

Open Ended

Explain: What happens during an Endothermic reaction?

The Science of Ice Packs

How can we visually demonstrate what we observed today?

Draw your finalized models for both the instant ice pack.

The Science of Ice Packs

Open Ended

Why does the water freeze? Explain with scientific reasoning.

Multiple Choice

What happens to matter (and therefore atoms) when a chemical reaction occurs?

• destroyed

• created

• rearranged

• vanishes

Open Ended

This idea is based on the ___________________.