CULMINATING ACTIVITY LC 23-24

Evaporation is

• Separating a soluble solid and solvent

• When one liquid is changed to another liquid

• Separating an insoluble solid from a liquid

• Separating solids from liquids

What is a substance that is dissolved in another substance? 

• solution
• solute
• solvent
• compound

The separation technique being used is

• Decanting

• Filtering

• Evaporation

• Distillation

Jessica made a pitcher of lemonade. What can she do to dilute if she thinks it doesn't taste right?

• Add water
• Add sugar
• Boil the lemonade
• Put it in the refrigerator 

In a fair test you should...

• only change one variable (the independent variable)
• change all the variables 
• change no variables 

What is a hypothesis?

• A hypothesis is the right answer to an experiment.
• A hypothesis is the wrong answer to an experiment.
• A hypothesis is an educated guess.
• I don't know.

What is the first step in the scientific method?

• Ask a question
• Conclusion
• No Horse Play
• Observe

What is the part of the experiment that is left alone or “natural", and is used to compare back to?

• Independent Variable
• Dependent Variable
• Control Group
• Experimental Group 

What is this?

• Element

• Compound

• Homogeneous Mixture

• Heterogeneous Mixture

Air is:

• An element

• A compound

• A mixture

• None of these