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Changes of Matter
Chemical reaction, Physical reaction, balancing chemical equations
Term | Definition |
---|---|
Chemical change | A change that results in a new substsnce |
Physical change | Changing form of substance but no new substance is created |
Chemical property | No change has been made yet |
Physical property | How the substance looks/ its characteristics |
Synthesis | A+B=AB Two substances form one new substance |
Single replacement | AB+CD=AC+BD One thing is replaced |
Double replacement | AB+CD=DB=AC two things are replaced |
Decompostiton | AB=A+B one substance is taken apart and forms two different substances |
Atom | Smallest unit of matter |
Molecule | Made up of atoms |
Conservation of Mass | can not create or destroy matter |