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CK-12 Physical Science For Middle School Quizzes and Test? At grade

CK-12 Physical Science for Middle School Quizzes and Tests complements the CK-12 Physical Science for Middle School FlexBook® resource and includes one quiz per lesson, one chapter test, and one unit ...

Chemical Chang? At grade

Definition of chemical change and examples, signs of chemical change and how it can be reversed.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logge ...

Activation Energ? At grade

Definition of activation energy and why all chemical reactions require it.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

Portable Powe? At grade

Discover the chemistry and history behind the batteries that power your mobile devices.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

It Gets You Goin? At grade

Discusses the content of energy drinks and bars, and how biochemical energy is created.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

Hydrogen Fuel Cell? At grade

Find out why Hydrogen Fuel Cells might be a superior form of energy storage.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

A Useful Wet Blanke? At grade

Learn about energy needed to change water from a liquid to a gas.

It is an educational content of CK-12 Foundation (to access some of the CK-12 contents you must be logged in).

The energy of material systems

The educational resource shows how the energy is the capacity to produce changes in the environment by doing work or transferring heat. This means that when a body transfers heat or does work, its ene ...

The changing Earth

The educational resource shows a Flash animation about the greenhouse effect The Earth is an open material system, because it interchanges matter and energy with outer space.

The first law of thermodynamics

The educational resource shows an interactive animation about the first law of thermodynamics:when we heat a pressure cooker, the heat we supply to the water is used to increase the temperature of the ...

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