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My topic will be about Physical and chemical changes
Transcript of My topic will be about Physical and chemical changes
My topic will be about Physical and chemical changes.
Here are some pictures to look and read at.These picture show physical changes.
Chemical changes occur when the bonds between atoms in a molecule are created or destroyed. Changes in the physical state are related to changes in the environment such as temperature, pressure, and other physical forces. Generally, the basic chemical structure does not change when there is a physical change. Of course, in extreme environments such as the Sun, no molecule is safe from destruction.
Here there is a chemical reaction the water gets Bobbie because it got a tablet that makes it sparkle the water so it gets a chemical.
CHANGING STATES OF MATTER
In a chemical reaction,the molecules of one substance break apart and join together with those of another substance to create a different compound.Many chemical reactions are NON-REVERSIBLE CHANGES.You can not turn a baked cake back in to its raw ingredients. Some chemical reactions can be reversed, and re-formed into the original substance.These are REVERSIBLE CHANGES.
Physical and chemical changes