Slime
Egg Drop
Crystals
Bottle Rockets
3-D Printing
100

Glue contains long chains of molecules called ___________?

polymers

100

What pulls everything down toward the ground at the same speed?

Gravity

100

What is a crystal?

A solid where molecules are arranged in a repeating pattern.

100

What is force in a small space?

pressure

100

_______ = heated tip that melts plastic


Nozzle

200

How does activator make slime?

Activator helps connect the polymers together.

200

What materials help absorb energy when impacting with a surface?

straws, cotton balls, cushion, felt, etc.

200

What is an example of living things containing crystals?

Bones and teeth/Seashells

200

Vinegar + baking soda reacts to create ________?

carbon dioxide gas (CO2)

200

__________ = plastic used for printing


Filament

300

What are two types of polymers?

natural polymers and synthetic polymers

300

__________ is when air pushes against an object that is moving.

Air resistance

300

Why does it stick to the pipe cleaner?

1. The pipe cleaner provides lots of places for crystals to start

2. Crystals prefer rough surfaces


300

What is Newton's third law?

For every action, there is an equal and opposite reaction.

300

_____ = one thin slice of the object

Layer

400

The activator links polymer chains together. This process if called ________.

Cross-Linking

400

What does popsicle sticks and paper do to protect your egg?

distributes/spreads out the force.

400

What is the process by which crystals form?

Crystallization

400

Gas pressure creates _________.

thrust

400

What is 3-D printing?

A process where a machine creates objects layer by layer using melted material such as plastic.

500

What kind of fluid is slime considered?

Non-Newtonian fluid
500
What is acceleration?

The rate at which an object changes its velocity/speed.

500

Why do crystals form when a hot solution with borax cools?

Hot water dissolves a LOT of borax, more than normal water can hold. As the water cools, it cannot hold as much borax anymore. The extra borax begins to leave the water and creates solid crystals.

500

Vinegar is a _____, while baking soda is a ______.

acid, base

500
What are the support beams of hanging portions of a print called?

scaffolding

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