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Changes in Matter
Test Review
Question | Answer |
---|---|
Chemical Change | is any change that results in the formation of new chemical substances |
Physical Change | any change NOT involving a change in the substance's chemical identity |
Chemical Property | is any of a material's properties that becomes evident during, or after, a chemical reaction |
Physical Property | any property that is measurable, whose value describes a state of a physical system. |
Synthesis | When2 substances come together to make one |
Decompisition | Two substance break apart to become 2 |
Single Replacement | When one substance takes the place of another substance and makes 2 |
Double Replacement | When two substances switch places with 2 other substances |
Atom | Basic unit of a chemical element |
Molecule | smallest particle in a chemical element |
Conservation of mass | smallest particle in a chemical element |
Reactants | are the substances that are present before the chemical change takes place |
Products | a substance obtained from another substance through chemical change |
Diff between chemical and physical change | Chemical makes something new physical doesn't change anything but it's form |
Diff between Chemical and physical property | Chemical is telling us what it can do Physical is its appereance |