Chemistry: Chapter 1 Project
By: Colton Hilliard
Physical and chemical changes in the environment can cause environmental issues such as; plastic decomposition, global warming, effects of acid rain, and oil spills.
Disadvantages of Physical & Chemical changes
Physical Property - used to observe and describe matter.
Examples: appearance, texture and color.
Physical Change- changes the physical state of matter but the element remains the same.
Example: crushing a can
Advantages of chemical and physical reactions
In many chemical reactions such as combustion, rusting and the reactions by which we get energy from the food we eat.
Chemical Properties- observed when you change chemical identity.
Physical properties can be observed or measured without changing the composition of the matter. Physical properties are used to observe and describe matter.
Chemical Change - chemical is changed into a different substance.
Some chemical properties produced by such chemical changes include; enthalpy of formation, or the heat either released or absorbed during the formation of standard elements.
Why are physical changes important?
A good understanding of physical and chemical change helps scientists and inventors predict what will happen to matter and enables them to create new processes to make our lives easier.