Mixtures & Solutions Investigation 2

Mixtures & Solutions Investigation 2

Investigation 2- Black Boxes

Models

• A model is an explanation of an object, event, or system that cannot be observed directly.

• Models can be used to test a system.

• Models can be communicated through words and drawings.

• Models can be revised.

Multiple Choice

5. Models, once described, stay the same over time.

• True

• False

Multiple Choice

Models are used to communicate information.

• False

• True

Developing Models

• 1. Make observations of a system or event

• 2. Construct the model

• 3. Analyze or test the model

• 4.Revise the model as needed

Multiple Choice

The first step to developing a model is

• Revise the model

• Analyze or test the model

• Make observations of a system or event

• Construct the model

Multiple Choice

The second step to developing a model is

• Make observations of a system or event

• Analyze or test the model

• Revise the model as needed

• Construct the model

Multiple Choice

The third step to developing a model is

• Construct the model

• Analyze or test the model

• Make observations of a system of event

• Revise the model as needed

Multiple Choice

The fourth step to develop a model is

• Construct the model

• Revise the model as needed

• Make observations of a system or event

• Analyze or test the model

Change in state of matter

• The change in state from a solid to a liquid is called melting.

• The change in state from a liquid to a solid is called freezing.

• The change in state from a gas to a liquid is called condensation.

Multiple Choice

The change of state from a gas to a liquid

• melting

• condensation

• freezing

• evaporation

Multiple Choice

The change of state from a liquid to a solid

• melting

• freezing

• condensation

• evaporation

Multiple Choice

The change in state from a solid to a liquid

• melting

• freezing

• condensation

• evaporation

Multiple Choice

A _______ is a generally accepted term in science to represent any complex system or object that is not fully accessible to direct observation.

• black box

• construct

• collaboration

• consensus