CHANGES IN MATTER
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CHANGES IN MATTER CHANGES CAN BE PHYSICAL
CHEMICAL
PHYSICAL CHANGES IN MATTER A physical change means: the form of matter changes, but its chemical properties are still the same.
PHYSICAL CHANGES IN MATTER Some physical changes are reversible: the substance can be changed back to its original form.
PHYSICAL CHANGES IN MATTER Some physical changes are irreversible: the substance can’t be turned back to its original form.
PHYSICAL CHANGES IN MATTER When matter changes state because of temperature, these are PHYSICAL CHANGES.
PHYSICAL CHANGES IN MATTER
CHEMICAL CHANGES IN MATTER Chemical changes occur when substances change into other substances.
CHEMICAL CHANGES IN MATTER
These changes occur because the atoms in the substance react and group together differently.
CHEMICAL CHANGES IN MATTER Types of chemical reactions are: 1. Oxidation 2. Combustion 3. Putrefaction
CHEMICAL CHANGES IN MATTER Oxidation: it occurs when a substance combines with oxygen. Atoms react and change into new substance called rust.
CHEMICAL CHANGES IN MATTER Combustion: the process of burning. It happens really quickly and produce a lot of heat. Combustion needs oxygen.
CHEMICAL CHANGES IN MATTER Putrefaction: is a chemical change that happens when organic matter decomposes.
CHEMICAL CHANGES IN MATTER Oxidation: it occurs when a substance combines with oxygen.