Science Notes Tuesday, September 2

Chemical Change

2H₂+O₂à 2H₂O

Hydrogen plus Oxygen makes water

http://www.britishpathe.com/video/actual-zeppelin-crash-aka-hindenburg-airship-disas

Learning Target and Criteria for Success

I will learn about different kinds of mixtures.

            I will be able to explain why            creating a mixture is an       example of physical change.

Mixture

Two or more substances that are mixed together, but not

chemically combined.

Examples

Salad

 Trail Mix

Cookie dough

Two Types of Mixtures

Heterogeneous: the parts of the mixture are not uniform

Two Types of Mixtures

Homogeneous: the parts of the mixture are uniform

Solution

A homogeneous mixture where one substance is dissolved in the other.

Colloid

A mixture where one substance is suspended in

another.

We are going to make some of these mixtures in the lab! Remember to follow all lab safety rules! Do not eat or smell anything, wear your goggles the whole time, listen to my directions!!!

Reflection

Explain why creating a mixture is an example of a physical change. What is taking place with the molecules of oil and water mixture?

Chemical Change

2H₂+O₂à 2H₂O

Hydrogen plus Oxygen makes water

http://www.britishpathe.com/video/actual-zeppelin-crash-aka-hindenburg-airship-disas

Learning Target and Criteria for Success

I will learn about different kinds of mixtures.

            I will be able to explain why            creating a mixture is an       example of physical change.

Mixture

Two or more substances that are mixed together, but not

chemically combined.

Examples

Salad

 Trail Mix

Cookie dough

Two Types of Mixtures

Heterogeneous: the parts of the mixture are not uniform

Two Types of Mixtures

Homogeneous: the parts of the mixture are uniform

Solution

A homogeneous mixture where one substance is dissolved in the other.

Colloid

A mixture where one substance is suspended in

another.

We are going to make some of these mixtures in the lab! Remember to follow all lab safety rules! Do not eat or smell anything, wear your goggles the whole time, listen to my directions!!!

Reflection

Explain why creating a mixture is an example of a physical change. What is taking place with the molecules of oil and water mixture?

Burning a piece of wood is a chemical change. Explain how you can tell it is a chemical change? What is happening with the molecules when the chemical change takes place?