Physical and Chemical Changes A Write On Activity.

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Presentation transcript:

Physical and Chemical Changes A Write On Activity

Matter  Matter is everywhere.  Matter is anything that takes up space and has mass.  Matter is constantly experiencing both chemical and physical changes.

Physical Change  Physical changes occur when matter changes its properties but not its chemical nature.  Physical changes could include a change in: texture, shape, size, state of matter, volume, mass, and weight.

Physical Change This is a physical change because water is changed to ice. This is a liquid changing to a solid which is a change in the state of matter only.

Chemical Change  Chemical changes are changes matter undergoes when it becomes new or different matter.  To identify a chemical change look for signs such as unexpected color change, bubbling and fizzing, light production, smoke, formation of a precipitate, and production of heat.

Chemical Change  A chemical change occurs when fireworks are used. Fireworks are made of metals such as magnesium and copper. These change chemically as they light up the sky.

Is it a chemical or physical change?  Sugar dissolving in tea Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct!

Is it a chemical or physical change?  Logs burning Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct!

Is it a chemical or physical change?  Breaking water up by separating it into hydrogen and oxygen Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct!

Is it a chemical or physical change?  Cutting paper Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct!

Is it a chemical or physical change?  Crushing an aspirin Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct!

Is it a chemical or physical change?  Metal rusting Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct!

Is it a chemical or physical change?  Lighter fluid burning Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct!

Is it a chemical or physical change?  An egg rotting Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct!

Is it a chemical or physical change?  An egg breaking Chemical Change Physical Change

OOPS! Did it change size, color, shape (Physical Change)? or Did it become different matter (Chemical Change)?

Correct!

Writing Activity  Write a paragraph about the differences between a chemical change and a physical change. Give examples of each.