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Module 2 Lesson 3
Science Review Module 2 Lesson 3
Question | Answer |
---|---|
precipitate | a solid formed by the chemical reaction of some solutions |
chemical reaction | event that occurs as two or more substances are combined to form a new substance |
evidence of chemical reaction | gas bubbles, change in color, odor |
chemical reaction is the | The only way to form compounds |
Combustion reaction | results in heat and light |
products | reactants form these in a chemical reaction |
example of chemical change | candle burning |
reactants | a substance that takes part in and undergoes change during a reaction. |
acids | a substance that has a low pH level and forms salts in chemical reactions with a base, and turns litmus red; typically, a corrosive or sour-tasting liquid of this kind. (vinegar) |
Mass in an equation | equal on both sides of equation |
What law states that the total mass of the reactants equals the total mass of the products in a chemical reaction? | the law of conservation of mass |