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# Today’s Agenda…11-1-12  PowerPoint PPT Presentation

Today’s Agenda…11-1-12 . Bellringer: Create a T-chart to compare elements and compounds Review Discuss Frayer Model Notes on Mixtures – Study Pack #11. Mixtures. Study Pack #11. Today’s Target…. I can describe mixtures. What is a mixture?. Two or more substances combined

Today’s Agenda…11-1-12 

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### Today’s Agenda…11-1-12 

• Bellringer: Create a T-chart to compare elements and compounds

• Review

• Discuss Frayer Model

• Notes on Mixtures – Study Pack #11

## Mixtures

Study Pack #11

### Today’s Target…

• I can describe mixtures.

### What is a mixture?

• Two or more substances combined

• When the substances come together a physical change takes place

• So the substances can be separated

### What is a mixture?

• Since a physical change takes place when the substances come together it DOES NOT create a new substance

• The substances you start with keep their properties

• Example: In a salad each substance in the salad keeps its own properties

### What is a mixture?

• Mixtures do not have substances in fixed amounts

• Example: When you make a salad you don’t have to have a certain number of cucumbers or tomatoes

### What is a mixture?

• Mixtures are not represented by formulas

• Mixtures can be made up of elements, compounds, or both

### Examples of Mixtures

• Salt water

• Toys in a toy chest

• Soap

### Types of Mixtures

• Heterogeneous mixtures

• Homogeneous mixtures

### Homogeneous Mixtures

• Homogeneous means “the same throughout”

• You can’t see the different parts in this type of mixture

• Sometimes also called a solution

• Sometimes you might not even know they are mixtures because you can’t see all the parts that they are made up of

• Examples: salt water, lemonade, air

### Heterogeneous Mixtures

• Has larger parts that are different from each other

• You can see the different parts in this mixture

• Examples: pizza, sand and water

### Homework

• Create a Frayer model for mixture