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Test 3: Chs 15, 21
Question | Answer |
---|---|
Examples of physical properties are _____. | Density, shape, color |
Examples of chemical properties are _____. | Ability to react with oxygen, Flammability |
A characteristic of matter that allows it to change to something new is a ____. | Chemical property |
Evaporation of a water puddle, bending a can, melting wax are all examples of ______ changes. | physical changes |
Burning paper, forming a precipitate, or baking a cake are all examples of _____ changes. | chemical changes |
Is the shape of an apple a physical or chemical property? | Physical |
The Law of conservation of Mass states that... | mass can not be created nor destroyed during chemical changes |
____ is another name for a homogenous mixture. | Solution |
The scattering of light by colloids is called _____. | The Tyndall effect |
What do 2 or more elements combine to form? | Compound |
A substance that dissolves in a solvent is said to be _____. | Soluble |
In a solution, the substance that is being dissolved is the _____. | Solute |
In a solution, the substance that dissolves another is the _____. | Solvent |
composition variable, can distinguish between the different parts | Mixture |
composition definite, can’t distinguish between the different parts | Solution |
Has mass, takes up space | Matter |
All atoms are the same | Element |
The formula for density | Density= Mass/Volume |