Properties of Matter. All Pure Matter has Physical Characteristics. Can observe without the substance changing into a new substance Examples: boiling point, freezing/melting point, hardness, color, texture, & state at room temperature (gas, liquid or solid), density, solubility
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If matter undergoes a physical change, then it is the same substance with the same physical and chemical properties before and after the change
Example: an ice cubemelts into liquid water and then can be boiled to make steam.
If matter undergoes a chemical reaction, a new substance with its own physical & chemical properties is produced
(-) ions in water
A strong acid releases more H+ into solution. A weak acid only partially dissolves in water
Sodium Hydroxide - NaOHPotassium Hydroxide - KOHAmmonium Hydroxide - NH4OHCalcium Hydroxide - Ca(OH)2Magnesium Hydroxide - Mg(OH)2Barium Hydroxide - Ba(OH)2Aluminum Hydroxide - Al(OH)3
(+) ions in water
Bases in food taste bitter: radish, cabbage, Brussels sprouts, turnip, olives, coffee, unsweetened cocoa, quinine, Tums®