Show:
Vocabulary
Physical Change
Chemical Change
Pure substances and Mixtures
Properties
100
Anything that has mass (weight) and takes up space.
What is MATTER?
100
Is a melted popsicle an example of a physical change?
What is YES? You can melt and refreeze a popsicle and it will still be a popsicle.
100
Is rust an example of a chemical change?
What is YES? You cannot change rust back into the metal is was before; therefore, it is a chemical change.
100

TRUE OR FALSE: A Pure substance can be separated into elements and compounds by physical methods

What is FALSE?

A Pure substance is made of the same composition

100
You use these to help you identify the physical properties.
What are YOUR SENSES?
200
These are the characterstics of an object and you use your senses to identify them.
What are PHYSICAL PROPERTIES?
200
Is Alka-Seltzer and water an example of a physical change?
What is NO? When you mix Alka-Seltzer and water, bubbles form, which indicates a chemical change as taken place.
200
Name the two indicators of a chemical change.
What are color change, bubbles, temperature change?
200

What is a homogeneous mixture? 

Give an example. 

a mixture where two substances are evenly mixed

Salt water

Kool aid 

Lemonade 

200
Name 2 physical properties of ice.
What are cold, hard, solid, wet, etc.?
300
Type of change where a new substance is created.
What is a CHEMICAL CHANGE?
300
Name a food that is an example of a physical change.
What is a salad or trail mix?
300
Name a food that is an example of a chemical change and explain why.
What is a cake, because you cannot turn a cake back into the eggs, flour, sugar, etc. that you mixed together?
300

What is a heterogeneous mixture?

Give an example

A mixture in which two or more substances are not evenly mixed

Trail Mix



300
Name 2 physical properties of water.
What is liquid, wet, odorless, etc.
400
A type of change where the substance stays the same, but size and shape may change.
What is a PHYSICAL CHANGE?
400
Explain how water could be an example of a physical change.
What is freezing and melting water to and from ice is an example of a physical change?
400
True or False. Turning peanuts to peanut butter is an chemical change.
What is FALSE? To make peanut butter, you grind up roasted peanuts, so nothing new is being created.
400

What is the difference between a homogenous and a heterogeneous mixture?

heterogenous are not evenly mixed

and a homogeneous mixture is evenly mixed 

400
Explain how iron fillings and sand can be separated using physical properties.
What is iron is magnetic and sand is not, so you can use a magnetic wand to separate the two substances?
500

matter with a composition that is always the same

What is a PURE SUBSTANCE

500
CHALLENGE (not a quiz question): Explain how the water cycle an example of a physical change.
What is YES, it is a physical change, because water changes from a liquid/solid when it precipitates, to a gas when it evaporates, then forms back into a liquid when it condensates. Then the process repeats again with the same substance, WATER!
500
CHALLENGE (not a quiz question) Explain how a rocket launch is an example of a chemical change.
What is the fuel combines with another chemcial to produce large volumes of a hot gas that propel the rocket into space?
500
Give an example of a pure substance

Salt

Water 

Hydrogen 

500
CHALLENGE (not on quiz). We can separate salt and water using physical properties. What do we call this process of evaproating the water to separate the salt?
What is DESALINATION?