| Question | Answer |
| What is the number written in front of a chemical formula called? | coefficient
|
Define the law of conservation of matter. | Atoms are neither created nor destroyed in a chemical reaction.
| Identify if this chemical equation is balanced or unbalanced. HCl + CaCO3 -> CaCl2 + H2O + CO2 | unbalanced
| In this chemical equation, how many hydrogen atoms are represented in the reactants? 2C2H6 + 7O2 -> 4CO2 + 6H2O | 12
| Does this equation follow the law of conservation of mass?2HCl + CaCO3-> CaCl2 + H2O + CO2 | yes
| What are the 5 ways to identify if a chemical reactions has happened? | color change, formation of a gas, presence of light, temperature change, formations of a precipitate
| identify if this equations is Balanced or Unbalanced SiCl4 + H2O -> SiO2 + HCl | unbalanced
| Balance the following equation: P + 02 -> P408 | 4P + 4O2 -> P4O8
| What is found on the right side of a chemical equation? | Product
| How many different types of elements are in C6H12O6? | 3
| What are valence electrons? | Electrons in the Outer shell
| Is this equation balanced? | C3H8 + 5O2 -> 4H2O + 3CO2
| Draw and color a model of this chemical formula CO2 | colored model
| Define the term precipitate. | a white solid that forms and falls to the bottom of a container.
| Balance the following equation, Ni + AuBr3 → NiBr2 + Au | balance
| a process in which atoms of one or more substances rearrange to form one or more new substances | Chemical Reaction
| How many atoms are present in this chemical formula? | 14
| Is this chemical formula balanced? | 2As + NaOH 2Na3AsO3 +3H2 |
