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Mixes in Phys. Sci.

About the mixes that are used in chemistry.

QuestionAnswer
What elements are always with their "twin"? Hydrogen, oxygen, fluorine, bromine, iodine, nitrogen, chlorine.
What makes something a substance? Matter that a chemical formula can be written for.
What makes something a mixture? It can be in any proportion and the parts are not chemically bonded.
Is alcohol a substance or mixture? Substance
What is homogeneous? An item that has all particles equally distributed.
What is heterogeneous An item that has particles unevenly distributed.
Is pain homogeneous or heterogeneous? Heterogeneous
What has large particles and settles out on standing? Suspension
What has medium particles, doesn't settle out on standing, and scatters in light? Colloids
What has no particles and doesn't settle out on standing? Solutions
What is a physical change? A change of how something looks that you can always change back to the original state.
What is a chemical change? A change of something that you can't change back to the original state.
What is an example of a physical property? Color, density, solubility, taste, melting point, hardness, boiling point, luster, odor, dissolves, slices in half, etc.
What is an example of a chemical property? Flammability, reacts with acid to form hydrogen, reacts wit water to form a gas, reacts with a base to form water, can neutralize a base, decomposes, rusts, producing carbon dioxide gas, souring, rots etc.
Created by: Carolina_Girl