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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 |