Unit 2 Intro

​Unit 2- Chemical Reactions/ States of Matter

Multiple Choice

Why is it important to have access to hot food during emergency situations like power outages?

• Hot food provides comfort and nutrition when other resources are limited.

• Hot food is only for taste and not necessary in emergencies.

• Cold food is always safer than hot food in emergencies.

• People do not need to eat during emergencies.

Multiple Choice

What kind of assistance did people receive in New York City after Superstorm Sandy, as shown in the images?

• Food and water distribution

• Medical treatment

• Shelter construction

• Financial aid

Fill in the Blank

Meals, Ready-to-Eat (MREs) use a ___ heater to warm food without fire.

Multiple Select

Which of the following are features of an MRE?

• Includes a flameless heater

• Requires electricity to heat food

• Can be eaten without heating

• Contains only snacks

Open Ended

Explain how Meals, Ready-to-Eat (MREs) can be useful during emergency situations.

Multiple Select

According to the classroom norms, what are some ways students can support each other during discussions?

• Provide encouragement

• Interrupt frequently

• Critique people instead of ideas

• Share time to talk

Open Ended

Why is it important to choose and focus on a classroom norm during group activities?

Open Ended

How does a flameless heater heat up food just by adding room-temperature water?

Open Ended

Reflect on your experience practicing the norm you selected to work on. What did you do well, and what could you improve on?

Multiple Select

Which of the following are initial questions you might have about MREs and flameless heaters?

• How do MREs taste?

• How do flameless heaters work?

• Why are MREs used in emergencies?

• What is the nutritional value of MREs?

Multiple Choice

Which of the following best describes the role of FEMA and the National Guard after Hurricane Maria in Puerto Rico?

• They provided entertainment for survivors.

• They distributed water and MREs to survivors.

• They rebuilt all the damaged homes immediately.

• They evacuated everyone from the island.

Fill in the Blank

Fill in the blank: After Hurricane Maria, the National Guard distributed water and ___ to residents in Saint Croix.

Multiple Choice

Why was it challenging for the Puerto Rico National Guard Soldiers to deliver food and water to Jayuya after Hurricane Maria?

• Because of debris left by the hurricane

• Because of lack of volunteers

• Because of insufficient supplies

• Because of poor weather conditions

Multiple Select

Which of the following are ways MREs are distributed to people in need after a disaster?

• By helicopter drop

• By boat delivery

• By ground transport

• By drone delivery

Open Ended

Describe how the National Guard and FEMA volunteers worked together to help communities in Puerto Rico after Hurricane Maria.

Fill in the Blank

Lunch breaks in the military often involve eating ___ meals.

Open Ended

What steps did the Navy take to assist the I-Kiribati fishermen whose boat was disabled near Betio Island?

Multiple Select

Which types of MREs are available for people with special dietary needs?

• Halal meals

• Kosher meals

• Gluten-free meals

• Vegetarian meals

Fill in the Blank

MRE stands for Meal, Ready-to-___

Multiple Choice

Which of the following is the most expensive meal option on average?

• MRE

• School Lunch

• Fast Food

• Home-cooked Meal

Open Ended

What do you notice and wonder about the average cost of MREs in comparison to the average cost of meals from other places?

Open Ended

What do you notice and wonder about how MREs with flameless heaters have typically been used?

Open Ended

Why do you think a heater is included with these meals? Why not just have people eat the food cold?

Now that we have studied MRE's let's look at another, similar yet very different chemical reaction

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How is it possible to heat it up?

Within the MRE there is a chemical and physical reaction. As we dive into CHEMISTRY, we'll take a look at both types of reactions and changes.

We'll also be using bath bombs as a base line example to compare and contrast a lot of examples.

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Types of Reactions

Multiple Choice

Which of the following is the correct order from LEFT to RIGHT?

• solid - liquid - gas

• liquid - solid - gas

• gas - solid - liquid

Multiple Choice

Which of these could be the bath bomb gas?

• methane

• oxygen

• helium

• carbon dioxide

Multiple Choice

What is a claim?

• A fact

• An answer to a question

• An explanation

• Something you find in an experiment

Multiple Choice

Matter is made of....

• Small particles

• One kind of thing

• Visible substances

• Two things mixed together

Multiple Choice

Where does the bath bomb fizz come from?

• No one knows, its new matter from the water

• From the parts of the bath bomb and water reacting to each other and creating CO2

• From the surrounding air

• From inside the bath bomb slowly exploding.