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Chapter 15 PS
Question | Answer |
---|---|
element or compound that cannot be broken down into simpler components and maintain the properties of the original substance. | substance |
When all atoms in a substance have the same identity. | element |
a sustenance in which the atoms of two or more element are combined i a fixed proportion. | compound |
A mixture in which different materials can be distinguished easily. | heterogeneous mixture |
contains two or more gaseous,liquid or solid substances blended evenly throughout. | homogeneous mixture |
a homogeneous mixture of particles so small that they cannot be seen with a microscope and will never settle to the bottom of their container. | solution |
a type of mixture with particles that are larger than those in solutions but not heavy enough to settle out. | colloid |
the scattering of light by colloidal particles. | tyndall effect |
a heterogeneous mixture containing a liquid in which visible particles settle. | suspension |
any characteristic of a material that you can observe without changing the identity of the substances that make up the material | physical poperty |
a change in size shape or state of matter | physical change |
the process for separating substances in a mixture by evaporation a liquid and re condinsing its vapor | distillatoin |
characteristic of a susbtace that indicates whether it can undergo a certain chemical change | chemical property |
a change of one substance to another | chemical change |
the mass of all substances that are present before chemical change equal the mass of all the substances that remain after the change. | law of conservation of mass |