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Chemistry- Mole
Review of chapter 6
| Question | Answer |
|---|---|
| What is Atomic Mass? | The total number of Protons + the number of Neutrons |
| 1 mole = __________ units | 6.022×10(^23) |
| What is a Empirical Formula? | The smallest whole number ratio. |
| What is Mass Percent? | A fraction of one subtance to the total mass of a substance. |
| What is a Molecular Formula? | An expression which states the number and type of atoms present in a molecule of a substance. |
| What is average Atomic Mass? | The weighed average mass of all isotopes of an element. |
| What is Molar Mass? | The Mass of one mole of a substance. |
| What are the substances that are present before a chemical reaction? | Reatants |
| In a chemical equation what does "aq" mean? | Aqueous - mixed with water |
| What is the purpose of balancing equations? | The equation will have the same number of elements before and after the reaction. |
| What are the subsatnces right of the arrow in a chemical equation? | The Products |
| What are some thing that can happen during a chemical reaction? | 1. color change 3. Bubbles form 2. A solid forms 4. Heat or flame is produced |